下列热化学方程式书写正确的是
A.SO2 + O22SO3ΔH =-196.6 kJ/mol |
B.H2(g)+O2(g)= H2O( l ) ΔH =-285.8 kJ/mol |
C.2H2 ( g )+ O2 ( g )= 2H2O ( l )ΔH =+571.6 kJ/mol |
D.C(s)+ O2 ( g )= CO2(g)ΔH =+393. 5 kJ/mol |
下列热化学方程式书写正确的是
A.SO2 + O22SO3ΔH =-196.6 kJ/mol |
B.H2(g)+O2(g)= H2O( l ) ΔH =-285.8 kJ/mol |
C.2H2 ( g )+ O2 ( g )= 2H2O ( l )ΔH =+571.6 kJ/mol |
D.C(s)+ O2 ( g )= CO2(g)ΔH =+393. 5 kJ/mol |