西北師大附中 2008屆高三第一學(xué)期期末考試
理綜試題
注意:1.請(qǐng)同學(xué)們將姓名、班級(jí)寫在密封線內(nèi);座位號(hào)寫在指定的地方;
2.試卷自己保存,只交答題紙;
3.第一卷的答案請(qǐng)涂在答題卡上。第二卷答題時(shí)請(qǐng)看清題號(hào),將各科試題答到相應(yīng)的答題紙上,交卷時(shí)將化學(xué)、物理、生物的答題紙分開交。
答題可能用到的相對(duì)原子質(zhì)量: O.16 S.32
第Ⅰ卷 選擇題
高一年級(jí)月考英語試題
命題人:郭小明 2008/4
第一卷
第一節(jié):?jiǎn)雾?xiàng)填空(共35小題;每小題1分,共35分)
從A、B、C、D四個(gè)選項(xiàng)中,選出適合空白處的最佳選項(xiàng)。
1.You be tired ― you’ve only been working for an hour.
A. must not B. won’t C. can’t D. may not
2. ―I want to know if I smoke here.
―No, you .Could you see the sign “NO SMOKING” there?
A. can; needn’t B. must; can’t C. shall; won’t D. may; mustn’t
3.Walking around, I found the city was full of people for the festival.
A. wearing B. had new clothes on C. dressing up D. dressed up
4. He cleared his throat as if ______ something..
A. to say B. says C. is saying D. have said
5. Mike is looking for another job because he feels that nothing he does _____
his boss.
A. serves B. satisfies C. promises D. supports
6. When I was wondering where I could get so much money for my trip, my sister to help.
A. had B. offered C. used D. pleased
7.----Does your sister study hard?
----Yes, she never missed a class ___ she catches a cold.
A. as if B. even if C. as though D. though
8.----Does your sister study hard?
----Yes, she never missed a class ___ she catches a cold.
A. as if B. even if C. as though D. though
9.I will finish it in a little while .Have a little ___.
A. time B stay C. patience D. moment
10.Our problem is ___ we can collect so much money in such a short time.
A. if B. that C. whether D. that whether
11.Do you mind ___ your computer for a while?
A. may to use B. me to use C. my using D.I using
12.Can you tell me _____?
A. who should I ask B.
where I should go there?
C. where I can get the book D.that he is where
13.The news is so ___ that we all feel unhappy.
A. disappointed B. disappointed C. disappointment D. disappoint
14.----Do you mind if I turn up the radio?
----Not at all. _____
A. Please do it B. you may C. Go ahead D. you do it
15.Can you give me a reason to_____ your absence yesterday?
A account for B. express C. say for D. account
16.You are saying that everyone should be equal, and this is _____ I disagree.
A. why B. where C. what D. how
17._______ you’ve got a chance, you might as well make full use of it.
A. Now that B. After C. Although D. As soon as
18. After Yang Liwei succeeded in circling the earth, ____ our astronauts desire to do is walk in space.
A. where B. what C. that D. how
19. ________ has helped to save the drowning girl is worth praising.
A. Who B. The one C. Anyone D. Whoever
20. The Foreign Minister said, “________ our hope that the two sides will work towards peace.”
A. This is B. There is C. That is D. It is
21. ________ we can’t get seems better than ________ we have.
A. What; what B. What; that C. That; that D. That; what
22. ________ we’ll go camping tomorrow depends on the weather.
A. If B. Whether C. That D. Where
23. He took her to the movie to ______ her ______.
A. cheer; up B. cheer; on C. bring; on D. bring; up
24. Please wait patiently. ______you’ll see him.
A. On time B. In time C. At times D. At one time
25.A quarrel ______ last Sunday, and he ______ his family.
A. was broken out; broke away B. broke out; broke away
C. was broken out; broke away from D. broke away; broke out
26. The young dancers looked so charming in their beautiful clothes that we took ____ pictures of them.
A. many of B. masses of C. the number of D. a large amount of
27. ________ days went by, he didn’t succeed in anything he had planned.
A. With B. When C. As D. While
28. The two sides reached a partial agreement, but several differences still ______ between them.
A. have B. live C. lay D. exist
29.― I wonder what I should learn in the future?
― You may learn art since you ________ painting and drawing.
A. benefit from B. have a gift for C. look forward to D. are tired of
30.The demand ________ the workers ask for higher wages seemed reasonable.
A. what B. that C. which D. when
31. ― Shall we go for a walk ________ watch TV?
― That’s a good idea.
A. instead of B. rather than C. in place of D. in the place of
32. It’s getting dark. We’d better ________ in a hotel for the night.
A. set up B. settle down C. set out D. settle up
33. It’s always difficult being in a forging country, ________ if you don’t speak the language.
A. especially B. specially C. extremely D. obviously
34. They live in a beautiful village, with many trees and flowers ________ it.
A. surrounded B. surrounds C. surrounding D. to surround
35. Word came _____
A. which B. that C. / D. what
第二節(jié) 完形填空(共20小題;每小題1.5分,滿分30分)
Two men, both
seriously ill, occupied the same hospital room. One man was allowed to
One morning,
the day nurse arrived to bring water for their baths only to find the 46 body
of the man by the window, who had died
The man asked the nurse what could have forced his dead roommate to 55 those wonderful things outside this window. The nurse answered that the man was blind and could not even see the wall. She said, “Perhaps he just wanted to encourage you.”
36. A. stand up B. lie down C. sit up D. sit down
37. A. room B. table C. seat D. bed
38. A. had to B. would rather C. prefer to D. rather than
39. A. morning B. evening C. afternoon D. dawn
40. A. will B. would C. should D. might
41. A. nurse B. workmate C. roommate D. doctor
42. A. park
43. A. played B. made C. started D. sailed
44. A. face to face B. shoulder to shoulder C. arm in arm D. back to back
45. A. describe B. tell C. hear D. imagine
46. A. strong B. warm C. sick D. lifeless
47. A. peacefully B. sadly C. secretly D. completely
48. A. looked B. found C. called D. ordered
49. A. Before B. As soon as C. When D. As far as
50. A. changed B. sit C. be moved D. be taken
51. A. making sure B. depending on C. making up D. accounting for
52. A. next B. first C. last D. another
53. A. surprise B. feeling C. try D. joy
54. A. look out B. look at C. glare at D. stare at
55. A. remember B. describe C. write D. talk
第三節(jié):閱讀理解(共10小題;每小題2分,滿分20分)
A
Much has happened since July 3, 1608, when French explorer Samuel de
Champlain established a settlement in a place called Kébec
― an Algonquin word meaning where the River narrows. He might not have
realized at the time that this day marked the beginning of a permanent French
presence in
For people of
French descent (血統(tǒng)), all over
America, everything points back to Quebec City, recognized as the founding site
of French civilization in North America. At one point,
After having
been the capital of
However, this does not mean that Quebec City is a museum town, focused only on its heritage (遺產(chǎn)) and history. On the contrary, it is a modern, people-friendly city that is resolutely turned towards the future.
56. Which of the following statements is TRUE?
A.
The empire of New France once controlled almost all of the
B.
C. July 3, 2008
will mark the 400th anniversary of the founding of
D. Samuel de
Champlain established the empire of
57. From this passage, we can infer that
A. was, is and will be an important and growing city
B. is the
biggest French enclave (飛地) in
C. belonged to
D. is located in
the centre of
58. The main purpose of the passage is to ________.
A.
show us that in history
B. show us how
C. tell us that
D. tell us a
brief introduction of
B
School is a place that is familiar to everyone. Let’s find out what American students do in school.
An official dance party is held about
twice a year in high schools in the
The most exciting
party that students can go to would have to be a dance party. Students attend
it in dresses similar to those of
In American
schools, instead of the teachers going to different rooms, students have their
own class schedules (課程表) and go to
different classrooms. When a student is away from school, they must have an
explanation for being away along with the signature(簽名) of a parent. The signed paper is then handed in
to the school office. High school drop outs and students being expelled (除名) are not that uncommon in the States. High
absences without excuses are one of the reasons why students are expelled from
school. American students also enjoy a number of activities out of school like
cheerleading (拉拉隊(duì)), student government and a host of
different sports.
59. Whose presence at the homecoming party can make others amazed?
A. The king and the queen acted by students. B. The laziest student in study.
C. The teacher who offers advice. D. Students who study hardest.
60. Why do students hold the dance party till the next morning?
A. Because they would like to dance and sang madly.
B. Because this is the only chance that they get dressed like film stars.
C. Because students make it as exciting as an awarding party of Oscar.
D. Because this perhaps is the last chance that they can enjoy their school life.
61. According to the passage, American students in school ________.
A. study in the same classroom B. have the same class with each other
C. attend different classes in different places D. wait for their teachers in their class
62. What is this passage mainly about?
A. The organizing of dance parties. B. Homecoming party.
C. How to ask
for a leave.
D.
School life in
C
Archaeological
evidence shows that coastal Indians had settled the
As
the main western terminus of
The
63. Which of the following
description about
A.
Vancouver is the third largest city in
B. Vancouver is a city located on water.
C.
Vancouver is not far from the
D.
The largest industrial centre in
64. According to the passage,
originally
A. a British man who explored the city落千丈 B. a sawmill settlement called Granville
C. the leader who controlled the area D. a transcontinental highway
65. The passage mainly tells us ________.
A.
the
C.
Vancouver’s history
D.
a brief introduction of the city of
第二卷
第一節(jié) 短文改錯(cuò)(共10小題; 每小題1.5分, 共15分)
In
on in almost every family. People who love these pets 66. ________
and have them as their good friends. After they keep 67. ________
them in its houses, they take them to animal hospitals 68. ________
to give them injections (注射) so they will not carry 69. ________
disease. They have specially animal food stores, though 70. ________
they can get animal food in almost every store. Some 71. ________
people spend around two hundreds Canadian dollars a 72. ________
month on animal food. They have a law for killing wild 73. ________
animals. If you killed an animal, you would be published. 74. ________
If an animal happened to get run by a car, people would 75. ________
be very sad about it.
第二節(jié):?jiǎn)卧~拼寫:(20題,20分)
1. There is _______ (充足) of rain for crops in this country.
2. The poor old man ___________(挨餓) to death for lack of food.
3. On our ______(到達(dá)) at the airport, we received a warm welcome.
4. Do you know when India gained ________(獨(dú)立) from Britain?
5. I don’t know whether Russia is a _______(歐洲) country or an Asian country.
6.As a middle school student, you may find you are growing up ________ (漸漸地).
7.Water ________ (存在) in three forms, which are liquid, gas and solid.
8.To our surprise, he ________ (平靜地) accepted the unfair treatment.
9. Scientists are doing ________ (研究) on how to prevent bird flu spreading all over the world.
10. After two hours’ journey, his ________ (力氣) gave out at last.
11. A person’s life is ________ (有限的), but love is lasting.
12. After ________ (聯(lián)合) with that large company, his business gradually picked up.
13. Mc Donald’s cares about healthy eating and provides food that is of high ________ (質(zhì)量).
14. Foreigners were a________ at the
achievements of
15. C________ are always God to businessmen.
16. They’re going to hold their wedding in the ________ (新開業(yè)) restaurant near their house.
17.The o________ languages of
18. His parents got rich by making money on the stock market, so he lived in a w________ family.
19.When d______ broke we were still 50 miles from
20.It was hot. Annie was f________ on her back in the pool to keep herself cool and comfortable.
第三節(jié) 書面表達(dá)(30分)
Smith先生是一位加拿大籍教師,今天他給你們做了一個(gè)講座,介紹了有關(guān)加拿大的情況。請(qǐng)你根據(jù)Smith先生的講座,寫一篇報(bào)告,向全校同學(xué)介紹加拿大的有關(guān)情況。詞數(shù)100左右。 要點(diǎn)包括:
1. 加拿大約占世界四分之一陸地面積,是世界第二大國(guó); 2. 人口稀少,全國(guó)人口約3200萬,居民主要講法語和英語; 3. 氣候區(qū)域差別很大; 4. 多湖泊,淡水資源豐富; 5. 豐富的森林資源,是世界最大紙張出口國(guó)。
高一年級(jí)月考英語答題紙
第二卷
第一節(jié) 短文改錯(cuò)(共10小題; 每小題1.5分, 共15分)
In
on in almost every family. People who love these pets 66. ________
and have them as their good friends. After they keep 67. ________
them in its houses, they take them to animal hospitals 68. ________
to give them injections (注射) so they will not carry 69. ________
disease. They have specially animal food stores, though 70. ________
they can get animal food in almost every store. Some 71. ________
people spend around two hundreds Canadian dollars a 72. ________
month on animal food. They have a law for killing wild 73. ________
animals. If you killed an animal, you would be published. 74. ________
If an animal happened to get run by a car, people would 75. ________
be very sad about it.
第二節(jié):?jiǎn)卧~拼寫:(20題,20分)
6. There is _______ (充足) of rain for crops in this country.
7. The poor old man ___________(挨餓) to death for lack of food.
8. On our ______(到達(dá)) at the airport, we received a warm welcome.
9. Do you know when India gained ________(獨(dú)立) from Britain?
10. I don’t know whether Russia is a _______(歐洲) country or an Asian country.
6.As a middle school student, you may find you are growing up ________ (漸漸地).
7.Water ________ (存在) in three forms, which are liquid, gas and solid.
8.To our surprise, he ________ (平靜地) accepted the unfair treatment.
9. Scientists are doing ________ (研究) on how to prevent bird flu spreading all over the world.
10. After two hours’ journey, his ________ (力氣) gave out at last.
11. A person’s life is ________ (有限的), but love is lasting.
12. After ________ (聯(lián)合) with that large company, his business gradually picked up.
13. Mc Donald’s cares about healthy eating and provides food that is of high ________ (質(zhì)量).
14. Foreigners
were a________ at the achievements of
15. C________ are always God to businessmen.
16. They’re going to hold their wedding in the ________ (新開業(yè)) restaurant near their house.
17.The o________ languages of
18. His parents got rich by making money on the stock market, so he lived in a w________ family.
19.When d______ broke we were
still 50 miles from
20.It was hot. Annie was f________ on her back in the pool to keep herself cool and comfortable.
第三節(jié) 書面表達(dá)(30分)
海南僑中2008屆化學(xué)科第一次模擬考試題
命題人:梁慶華 審題人:趙放
注意事項(xiàng):
⒈本試卷總分100分,第Ⅰ卷為客觀題,共45分,第Ⅱ卷為主觀題共55分;
⒉考試時(shí)間90分鐘;
⒊答題方式:第Ⅰ卷答在答題卡上,第Ⅱ卷答在答題紙上。
可能用到的相對(duì)原子質(zhì)量:H 1 C 12 O 16 Na 23
第Ⅰ卷(共45分)
選擇題(本題包括 15小題,每題只有1個(gè)正確選項(xiàng),每小題 3分,共 45 分。)
1、化學(xué)與科技、社會(huì)、生產(chǎn)密切結(jié)合,下列做法合理合法的是
A.汽油中添加乙醇制備“乙醇汽油”,可有效減少有害氣體的排放
B.養(yǎng)鴨廠添加蘇丹紅制“紅心鴨蛋”,可使鴨蛋色澤鮮艷、美觀
C.化妝品中添加含鉻物質(zhì)制美白潤(rùn)膚“SK-Ⅲ”,可使女性青春永駐
D.汽水中添加林丹、毒死蜱和七氯等殺蟲劑制“××可樂”,以增強(qiáng)口感和余味
2、正確掌握好化學(xué)用語是學(xué)好化學(xué)的基礎(chǔ),下列有關(guān)表述正確的是
A.H、D、T互為同素異形體
B.氨氣分子構(gòu)型為正四面體型
C.NH4Cl的電子式為:
D.S2-的結(jié)構(gòu)示意圖為:
3、現(xiàn)有①K2SO4;②Ba(NO3)2;③Al2(SO4)3;④ KOH;⑤CuCl2五種溶液。不用其他任何試劑,把它們一一鑒別出來的順序是
A.①②③④⑤ B.②③④①⑤
C.⑤④①②③ D.⑤④③②①
4、用NA表示阿伏加德羅常數(shù)的值,下列說法正確的是
A.1 molFe3+完全水解生成的氫氧化鐵膠體粒子的數(shù)目為NA
B.將含有NA個(gè)SO2和SO3分子的混合氣體,溫度降至標(biāo)準(zhǔn)狀況,其體積約為
C.1 mol干冰晶體中含有C=O鍵的數(shù)目為2NA
D.1 molNa2O2中含有的離子數(shù)為4NA
5、下列離子方程式正確是
A.氧化銅與硝酸溶液反應(yīng): O2- + 2H+ = H2O
B.鐵與稀硫酸反應(yīng): 2Fe + 6H+ = 2Fe3+ + 3H2↑
C.氫氧化鎂溶于鹽酸: Mg(OH)2 + 2H+ = Mg2+ + 2H2O
D.鈉放于水中: Na + H2O = Na+ + OH- + H2↑
6、據(jù)最新報(bào)道,科學(xué)家發(fā)現(xiàn)了如下反應(yīng):O2+PtF6=O2(PtF6),已知O2(PtF6)為離子化合物,其中Pt為+5價(jià),對(duì)于此反應(yīng),下列說法正確的是
A.在此反應(yīng)中,O2是氧化劑,PtF6是還原劑
B. O2(PtF6)中氧元素的化合價(jià)是+1價(jià)
C. O2(PtF6)中不存在共價(jià)鍵
D.在此反應(yīng)中,每生成1mol O2(PtF6)則轉(zhuǎn)移1mol電子
7、鋰電池用金屬鋰和石墨作電極材料,電解質(zhì)溶液是由四氯鋁鋰(LiAlCl4)溶解在亞硫酰氯()中形成的,電池的總反應(yīng)方程式為:8Li+3SOCl2 == 6LiCl+Li2SO3+2S,下列敘述中正確的是
A.電解質(zhì)溶液中混入水,對(duì)電池反應(yīng)無影響
B.金屬鋰作電池的正極,石墨作電池的負(fù)極
C.電池工作過程中,亞硫酰氯(SOCl2)被還原為L(zhǎng)i 2SO3
D.電池工作過程中,金屬鋰提供電子的物質(zhì)的量與析出硫的物質(zhì)的量之比為4∶1
8、將過量的氣體通入到一種溶液中,一定能產(chǎn)生沉淀的是
①SO2通入到Ba(NO3)2溶液中,②CO2通入NaAlO2溶液中,③CO2通入到氯化鈣溶液中,
④Cl2通入NaBr稀溶液中,⑤氨氣通入到MgCl2溶液中。
A. ①②③ B. ①②⑤ C. ②③⑤ D. ①②④⑤
9、某期刊封面上有如下一個(gè)分子的球棍模型圖。圖中“棍”代表單鍵或雙鍵或叁鍵。不同顏色的球代表不同元素的原子,該模型圖可代表一種
A.鹵代羧酸 B.酯
C.氨基酸 D.醇鈉
10、下列敘述不正確的是
A.乙醛或硝酸銀溶液均能使蛋白質(zhì)變性
B.將乙烯和二氧化硫分別通入酸性KMnO4溶液中,均能使KMnO4溶液褪色
C.反應(yīng)AgBr + KIAgI + KBr能在水溶液中進(jìn)行,是因?yàn)锳gI比AgBr更難溶于水
D.常溫下濃硝酸可貯存在鐵制或鋁制容器中,說明常溫下鐵和鋁與濃硝酸不反應(yīng)
11、用1.0 mol?L-1 NaOH溶液中和某濃度H2SO4溶液,其pH和所用NaOH溶液的體積關(guān)系如下圖所示,則原H2SO4溶液的物質(zhì)的量濃度和完全反應(yīng)后溶液的大致體積是
B. 0.5mol?L-1、 80mL
C. 0.5mol?L-1、 40mL
D. 1.0mol?L-1、 80mL
12、下列關(guān)于電解質(zhì)溶液的敘述正確的是
A. 常溫下,pH=7的NH4Cl與氨水的混合溶液中離子濃度大小順序?yàn)?/p>
c(Clˉ)>c(NH4+)>c(H+)=c(OHˉ)
B. 常溫下,同濃度的Na2S與NaHS溶液相比,Na2S溶液的pH大
C. 中和pH與體積均相同的鹽酸和醋酸溶液,消耗NaOH的物質(zhì)的量相同
D. 將pH=4的醋酸溶液稀釋后,溶液中所有離子的濃度均降低
13、下列敘述正確的是
A.等質(zhì)量的銅分別和過量的濃硫酸、濃硝酸充分反應(yīng),則反應(yīng)過程中轉(zhuǎn)移的電子數(shù)
之比為1 : 1
B.元素的非金屬性越強(qiáng),其最高價(jià)氧化物對(duì)應(yīng)水化物的酸性、氧化性也越強(qiáng)
C.已知C和CO的燃燒熱分別為Q1 、Q2 kJ/mol,則1 molC與0.5 molO2完全反應(yīng)生成(相同條件下)CO時(shí)的△H為:(Q2―Q1)kJ/mol
D.凡有單質(zhì)參加或生成的化學(xué)反應(yīng)一定屬于氧化還原反應(yīng)
14、在容積固定的密閉容器中存在如下反應(yīng):A(g)+3B(g)
下列判斷合理的是
A. 圖Ⅰ研究的是不同催化劑對(duì)反應(yīng)的影響,且乙使用的催化劑效率較高
B. 圖Ⅱ研究的是壓強(qiáng)對(duì)反應(yīng)的影響,且甲的壓強(qiáng)較高
C. 圖Ⅲ研究的是不同催化劑對(duì)反應(yīng)的影響,且甲使用的催化劑效率較高
D. 圖Ⅲ研究的是溫度對(duì)反應(yīng)的影響,且甲的溫度較高
15、胡椒酚是植物揮發(fā)油中的一種成分,其結(jié)構(gòu)如下圖:
關(guān)于胡椒酚的下列說法正確的是
①該化合物屬于芳香烴
②分子中最多有7個(gè)碳原子處于同一平面
③它的部分同分異構(gòu)體發(fā)生銀鏡反應(yīng)
④1mol該化合物最多可與2molBr2發(fā)生反應(yīng)
A.①③ B.①②④ C.③ D.②③④
第Ⅱ卷(共55分)
16、(12分)下圖所涉及的物質(zhì)均為中學(xué)化學(xué)中的常見物質(zhì),其中C為O2、D為C12、E為Fe單質(zhì),其余為化合物,它們存在如下轉(zhuǎn)化關(guān)系,反應(yīng)中生成的水及次要產(chǎn)物均已略去,
(1)寫出有關(guān)物質(zhì)的化學(xué)式:B __________ ,F(xiàn)_____________, H__________
(2)指出MnO2在相關(guān)反應(yīng)中的作用:反應(yīng)①中是________劑,反應(yīng)②中是_______劑
(3)若反應(yīng)①是在加熱條件下進(jìn)行,則A的化學(xué)式為 ,該物質(zhì)的晶體類型為 ;若反應(yīng)①是在常溫條件下進(jìn)行,則A的化學(xué)式為 __,
其電子式為 .
(4)寫出B與MnO2共熱獲得D的離子方程式 __________________ _______ _____
其中1molB參加反應(yīng)的過程中轉(zhuǎn)移的電子為 mol.
17、(10分)某二元酸(化學(xué)式用H
H
(1)Na2A溶液顯 (填“酸性”,“中性”,或“堿性”),理由是: (用離子方程式和必要的文字說明表示) 。
(2)常溫下,已知0.1mol?L-1NaHA溶液pH=2,則0.1 mol?L-1 H2A溶液中氫離子的物質(zhì)的量濃度可能是 0.11 mol?L-1,(填“ 大于 ”、“ 等于 ”或“ 小于 ”),理由是 。
(3)0.1 mol?L-1 NaHA的溶液中各種離子濃度由大到小的順序是 。
18、(12分)電解法制堿的主要原料是飽和食鹽水,由于粗鹽水中含有泥沙、Ca2+、Mg2+、Fe3+、SO42-等雜質(zhì),不符合電解要求,因此必須經(jīng)過精制。某同學(xué)設(shè)計(jì)了一種制備精鹽的實(shí)驗(yàn)方案,步驟如下(用于沉淀的試劑稍過量):
步聚1:取一定量的粗鹽,置于燒杯中,加入足量的水,配成粗鹽水;
步驟2:向粗鹽水中加入除雜試劑,然后進(jìn)行過濾,濾去不溶物,再向?yàn)V液中加入鹽酸調(diào)節(jié)鹽水的pH;
步聚3:將得到的溶液蒸發(fā)濃縮、冷卻、結(jié)晶、過濾、烘干即得精鹽;
請(qǐng)回答以下問題:
(1)上述實(shí)驗(yàn)中的過濾操作需要燒杯、____________、___________等玻璃儀器。
(2)步聚2中常用Na2CO3、NaOH、BaCl2作為除雜試劑,則加入除雜試劑的順序?yàn)椋篲_____________________________________;
(3)步聚2中,判斷加入BaCl2已過量的方法是:
________________________________________________;
(4)步聚2中,若先用鹽酸調(diào)節(jié)pH再過濾,將會(huì)對(duì)實(shí)驗(yàn)結(jié)果產(chǎn)生影響,其原因是:
________________________________________________;
(5)為檢驗(yàn)精鹽純度,需配制150 mL 0.2 mol/L NaCl(精鹽)溶液,上圖是該同學(xué)轉(zhuǎn)移溶液的示意圖,圖中的兩處錯(cuò)誤是:
。
若在定容時(shí)仰視,則所配溶液的濃度 0.2 mol/L(填“大于”或“小于”);若定容不慎超過刻度線,應(yīng)采用的處理方法是:
19、(13分)歸納整理是科學(xué)學(xué)習(xí)的重要方法之一。在學(xué)習(xí)了氧族元素的各種性質(zhì)后,可歸納整理出如下表所示的表格(部分)。
性質(zhì)\元素
8O
16S
34Se
52Te
單質(zhì)熔點(diǎn)(℃)
-218.4
113
450
單質(zhì)沸點(diǎn)(℃)
-183
444.6
685
1390
主要化合價(jià)
-2
-2,+4,+6
-2,+4,+6
原子半徑
逐漸增大
單質(zhì)與H2反應(yīng)情況
點(diǎn)燃時(shí)易化合
加熱化合
加熱難化合
不能直接化合
請(qǐng)根據(jù)表回答下列問題:
(1) 硒的熔點(diǎn)范圍可能是______________(2) 碲的化合價(jià)可能有_________________
(3) 硫、硒,碲的氫化物水溶液的酸性由強(qiáng)至弱順序是_________________(填化學(xué)式)。
(4) 氫硒酸有較強(qiáng)的_________(填“氧化性”或“還原性”),因此放在空氣中長(zhǎng)期保存易變質(zhì),其可能發(fā)生的化學(xué)方程式為_______________________________________。
(5) 右圖所示為氧族元素單質(zhì)與H2反應(yīng)過程中的能量變化(△H)示意圖,其中a、b、c、d分別表示氧族中某一元素的單質(zhì),△H為相同物質(zhì)的量的單質(zhì)與H2反應(yīng)的反應(yīng)熱。則:b代表________________ (寫單質(zhì)名稱)。
(6)硫的最高價(jià)含氧酸(H2SO4)是一種有廣泛用途的化學(xué)試劑。工業(yè)大量生產(chǎn)時(shí)通常要經(jīng)過①含硫物質(zhì)的氧化 ②SO2催化氧化成SO3 ③SO3的吸收三個(gè)主要過程。已知SO2的催化氧化是一個(gè)放熱的可逆反應(yīng),該反應(yīng)化學(xué)平衡常數(shù)(K)的表達(dá)式為 ,為提高SO2的轉(zhuǎn)化率,試寫出兩種可以采用的措施 ; 。吸收SO3時(shí)若反應(yīng)過快會(huì)形成酸霧,則是否可以用水直接吸收 。
20、(8分) 關(guān)于芳香族化合物A的有關(guān)信息如下:
①A中碳的質(zhì)量分?jǐn)?shù)為77.77%,H的質(zhì)量分?jǐn)?shù)為7.40%,其余為氧;
②光譜法測(cè)定時(shí)波譜圖反映出A的相對(duì)分子質(zhì)量為108;
③A可以與乙酸在濃硫酸加熱條件下生成有水果香味的產(chǎn)物;
④A可以與金屬鈉反應(yīng)放出氫氣,但不能與氫氧化鈉反應(yīng);
試回答:
(1)測(cè)A的相對(duì)分子質(zhì)量的光譜為 (填代號(hào))
A. 紅外光譜 B. 質(zhì)譜 C. 核磁共振譜
A物質(zhì)苯環(huán)上的一溴代物有 種
(2)A通常有三種不同類別的芳香族同分異構(gòu)體,試寫出另兩種不同類別的同分異構(gòu)體的結(jié)構(gòu)簡(jiǎn)式(各寫一種):
(3)A與乙酸反應(yīng)的化學(xué)方程式為
(4)已知灼熱的銅絲伸入裝有液體A的試管中反復(fù)幾次會(huì)聞到一種刺激氣味,該反應(yīng)的化學(xué)方程式為
海南僑中2008屆化學(xué)科第一次模擬考試
(第Ⅱ卷)答題紙
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