题目内容
试直接判断下列热化学方程式书写不正确的是( )
A.1/2H2(g)+1/2Cl2(g)===HCl(g)ΔH=-91.5 kJ/mol |
B.1/2H2(g)+1/2Cl2(g)===HCl(g)ΔH=+91.5 kJ/mol |
C.H2(g)+Cl2(g)===2HCl(g) ΔH=-183 kJ/mol |
D.2HCl(g)===H2(g)+Cl2(g) ΔH=+183 kJ/mol |
B
解析
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题目内容
试直接判断下列热化学方程式书写不正确的是( )
A.1/2H2(g)+1/2Cl2(g)===HCl(g)ΔH=-91.5 kJ/mol |
B.1/2H2(g)+1/2Cl2(g)===HCl(g)ΔH=+91.5 kJ/mol |
C.H2(g)+Cl2(g)===2HCl(g) ΔH=-183 kJ/mol |
D.2HCl(g)===H2(g)+Cl2(g) ΔH=+183 kJ/mol |
B
解析