將H2(g)和Br2(g)充入恒容密閉容器.恒溫下發(fā)生反應H2(g)+Br2(g)2HBr(g),△H<0.達到平衡時Br2(g)的轉(zhuǎn)化率為a,若初始條件相同.絕熱條件下進行上述反應.平衡時Br2(g)的轉(zhuǎn)化率為b.則a與b的關(guān)系是A.a(chǎn)>b B.a(chǎn)=b C.a(chǎn)<b D.無法確定 查看更多

 

題目列表(包括答案和解析)

將H2(g)和Br2(g)充入恒容密閉容器,恒溫下發(fā)生反應H2(g)+Br2(g) 2HBr(g)g平衡時Br2(g)的轉(zhuǎn)化率為a;若初始條件相同,絕熱下進行上述反應,平衡時Br2(g)的轉(zhuǎn)化率為b。a與b的關(guān)系是(   )

A.a(chǎn)>b B.a(chǎn)=b   C.a(chǎn)<b  D.無法確定

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將H2(g)和Br2(g)充入恒容密閉容器,恒溫下發(fā)生反應H2(g)+Br2(g)2 HBr(g)  ΔH<0平衡時Br2(g)的轉(zhuǎn)化率為a;若初始條件相同,絕熱下進行上述反應,平衡時Br2(g)的轉(zhuǎn)化率為b。a與b的關(guān)系是(    )

A.a(chǎn)>b         B.a(chǎn)=b         C.a(chǎn)<b         D.無法確定

 

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將H2(g)和Br2(g)充入恒容密閉容器,恒溫下發(fā)生反應H2(g)+Br2(g) 2HBr(g)△H<0,平衡時Br2(g)的轉(zhuǎn)化率為a;若初始條件相同,絕熱下進行上述反應,平衡時Br2(g)的轉(zhuǎn)化率為b。a與b的關(guān)系是

A.a(chǎn)>b        B.a(chǎn)=b          C.a(chǎn)<b        D.無法確定

 

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將H2(g)和Br2(g)充入恒容密閉容器,恒溫下發(fā)生反應H2(g)+Br2(g)??2HBr(g) ΔH<0,平衡時Br2(g)的轉(zhuǎn)化率為a;若初始條件相同,絕熱下進行上述反應,平衡時Br2(g)的轉(zhuǎn)化率為b。ab的關(guān)系是(  )

A.a>b         B.ab

C.a<b         D.無法確定

 

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將H2(g)和Br2(g)充入恒容密閉容器,恒溫下發(fā)生反應

H2(g)+Br2(g)      2HBr(g) △H<0,平衡時Br2(g)的轉(zhuǎn)化率為a;若初始條件相同,絕熱下進行上述反應,平衡時Br2(g)的轉(zhuǎn)化率為b。a與b的關(guān)系是 (  )

A.a(chǎn)>b       B.a(chǎn)=b       C.a(chǎn)<b      D.無法確定

 

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單選題(3分×16=48分)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

B

D

B

A

D

A

C

C

C

A

B

B

C

D

D

D

非選擇題(共60分)

17.(8分)

(1)n-1 ; (2)n+3 ;   (3)C80 ; (4)C80H160

18.(10分,每空2分)

(1)CH4+10OH-8e=CO32+7H2O            2O2+4H2O+8e=8OH

(2)1              (3)增大       (4)補充KOH

 

19.(13分)

(1)a=7時HA是強酸,a>7時HA是弱酸(2分)

(2)否(2分)      C(2分)

(3)弱(1分)      酚酞(2分)

(4)10-5 (2分)    (10-5-10-9)(2分)

20.(12分)

(1)O2(2分)     偏鋁酸鈉(2分)

(2)4Fe(OH)2+2H2O+O2ㄔ4Fe(OH)3(2分)

(3)Fe3++3H2OFe(OH)3+3H+(2分)

(4)2H2O+ O2+4e=4OH(2分)

(5)3Fe+4H2O(g)Fe3O4+4H2(2分)

21. (9分)

(1)加熱條件下,Mg與玻璃中的SiO2反應腐蝕玻璃(3分)

(2)防止C降溫時因C中氣體壓強減小而引起D中溶液的倒吸(3分)

(3)MgO(1分)    MgS(1分)   S(1分)

22.(8分) (1)60%(3分)      (2)<(2分)    (3)1.4(3分)

 

 

 

 

 

文本框: 班級:                  姓名:                 學號:                      化學答題卡

單選題(3分×16=48分)

題號

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

答案

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

非選擇題(共60分)

17.(8分)

(1)_______________     ___

(2)______                    ___

(3)____________________________

(4)_______________________     ____

18.(10分)

(1)________________                     ____________

    _____________________                       _______

(2)___________(3)_______________(4)_________________         _________

19.(13分)

(1)__________                  __________                     ______

(2)____________;___         (3)____________;_______________

(4)______________________;_______________________

 

 

20.(12分)(1)_____________;__________________

(2)_____________________________________________________________________

(3)__________________________________________________________________

(4)____________________________________________________________________

(5)____________________________________________________________________

 

21.(9分)

(1) ___________                                                  ________

___________                                                                

(2)____________________________________                     ________

(3)______           ________________________                       __

22.(8分)

(1) _____                    ____

(2) _                                    (3) ____                       __


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