7.根据以下四个反应:(1)H2S+I2=2H++2I-+S¯ (2)H2SO3+2H2S=3S¯+3H2O (3)2I-+Br2=2Br-+I2 (4)H2SO3+I2+H2O=H2SO4+2HI 确定Br-.I-.H2S和H2SO3还原性由强到弱的顺序是 A.H2S>H2SO3>I->Br- B.Br->I->H2SO3>H2S C.H2SO3>H2S>Br->I- D.I->Br->H2S>H2SO3 查看更多

 

题目列表(包括答案和解析)

根据以下四个反应:

(1)H2S+I2=2H++2I+S¯   

(2)H2SO3+2H2S=3S¯+3H2O                 

(3)2I+Br2=2Br+I2      

(4)H2SO3+I2+H2O=H2SO4+2HI

确定Br、I、H2S和H2SO3还原性由强到弱的顺序是(  )

A.H2S>H2SO3>I>Br-       B.Br->I>H2SO3>H2S

C.H2SO3>H2S>Br->I       D.I>Br>H2S>H2SO3

 

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根据以下四个反应:(1)H2S+I2=2H++2I+S¯       (2)H2SO3+2H2S=3S¯+3H2O

(3)2I+Br2=2Br+I2          (4)H2SO3+I2+H2O=H2SO4+2HI

确定Br、I、H2S和H2SO3还原性由强到弱的顺序是                                  

A.H2S>H2SO3>I>Br                  B.Br->I>H2SO3>H2S

C.H2SO3>H2S>Br>I                  D.I>Br>H2S>H2SO3

 

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根据以下四个反应:(1)H2S+I2=2H++2I+S¯    (2)H2SO3+2H2S=3S¯+3H2O

(3)2I+Br2=2Br+I2       (4)H2SO3+I2+H2O=H2SO4+2HI

确定Br、I、H2S和H2SO3还原性由强到弱的顺序是

A.H2S>H2SO3>I>Br-       B.Br->I>H2SO3>H2S

C.H2SO3>H2S>Br->I       D.I>Br>H2S>H2SO3

 

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根据以下四个反应:(1)H2S+I2=2H++2I+S¯    (2)H2SO3+2H2S=3S¯+3H2O

             (3)2I+Br2=2Br+I2       (4)H2SO3+I2+H2O=H2SO4+2HI

确定Br、I、H2S和H2SO3还原性由强到弱的顺序是

A.H2S>H2SO3>I>Br-       B.Br->I>H2SO3>H2S

C.H2SO3>H2S>Br->I       D.I>Br>H2S>H2SO3

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根据以下四个反应:(1)H2S+I2=2H++2I+S¯    (2)H2SO3+2H2S=3S¯+3H2O

             (3)2I+Br2=2Br+I2       (4)H2SO3+I2+H2O=H2SO4+2HI

确定Br、I、H2S和H2SO3还原性由强到弱的顺序是

A.H2S>H2SO3>I>Br-       B.Br->I>H2SO3>H2S

C.H2SO3>H2S>Br->I       D.I>Br>H2S>H2SO3

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