.已知:①2C(s)+O2(g)====2CO(g) ΔH=-221.0 kJ·mol-1;②2H2(g)+O2(g) ====2H2O(g) ΔH=-483.6 kJ·mol-1。则反应C(s)+H2O(g) ====CO(g)+H2(g)的ΔH为( )
A.+262.6 kJ·mol-1 | B.-131.3 kJ·mol-1 |
C.-352.3 kJ·mol-1 | D.+131.3 kJ·mol-1 |
.已知:①2C(s)+O2(g)====2CO(g) ΔH=-221.0 kJ·mol-1;②2H2(g)+O2(g) ====2H2O(g) ΔH=-483.6 kJ·mol-1。则反应C(s)+H2O(g) ====CO(g)+H2(g)的ΔH为( )
A.+262.6 kJ·mol-1 | B.-131.3 kJ·mol-1 |
C.-352.3 kJ·mol-1 | D.+131.3 kJ·mol-1 |