2.已知H2(g) + C12(g) = 2HCl(g),△H=-184.6kJ·mol-1.則反應(yīng)HCl(g)= 1/2H2(g) +1/2 Cl2(g)的△H為 ( ) A.+92.3 kJ·mol-1 B.-92.3 kJ·mol-1 C.-369.2 kJ·mol-1 D.+184.6 kJ·mol-1 查看更多

 

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已知H2(g)+C12(g)2HCl(g);△H=-184.6kJ·mol1

則反應(yīng)2HCl(g) H2(g)+Cl2(g)的△H為

A.+92.3 kJ·mol1                       B.-92.3 kJ·mol1

C.-369.2 kJ·mol1                      D.+184.6 kJ·mol1

 

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已知H2(g)+C12(g)2HCl(g);△H=-184.6kJ·mol-1,
則反應(yīng)2HCl(g) H2(g)+Cl2(g)的△H為

A.+92.3 kJ·mol-1B.-92.3 kJ·mol-1
C.-369.2 kJ·mol-1D.+184.6 kJ·mol-1

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已知H2(g)+C12(g)2HCl(g);△H=-184.6kJ·mol-1,
則反應(yīng)2HCl(g) H2(g)+Cl2(g)的△H為
A.+92.3 kJ·mol-1B.-92.3 kJ·mol-1
C.-369.2 kJ·mol-1D.+184.6 kJ·mol-1

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