题目内容
已知
①H2(g)+1/2O2(g)=H2O(l) △H =-284.2kJ /mo1
②2NH3(g)+3/2O2(g)=N2(g)+3 H2O(l) △H =-760.2 kJ /mo1
则可推知1/2 N2(g)+ 3/2H2(g)= NH3(g) 的△H是( )
A.-91.96 kJ/mol B.-104.5 kJ/mol
C.+476.52 kJ/mol D.-46.2 kJ/mol
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题目内容
已知
①H2(g)+1/2O2(g)=H2O(l) △H =-284.2kJ /mo1
②2NH3(g)+3/2O2(g)=N2(g)+3 H2O(l) △H =-760.2 kJ /mo1
则可推知1/2 N2(g)+ 3/2H2(g)= NH3(g) 的△H是( )
A.-91.96 kJ/mol B.-104.5 kJ/mol
C.+476.52 kJ/mol D.-46.2 kJ/mol