已知：①H2(g)+
O2(g)=H2O(g) 
kJ·mol-1，② C(s)+O2(g)="CO(g)" 
kJ·mol-1。由此可知焦炭与水蒸气反应的热化学方程式为：C(s)+H2O(g)=CO(g)+H2(g) 
,则为
| A．+131.3 kJ·mol-1 | B．-131.3 kJ·mol-1 |
| C．+352.3 kJ·mol-1 | D．-352.3 kJ·mol-1 |
已知：①H2(g)+O2(g)=H2O(g) kJ·mol-1，② C(s)+O2(g)="CO(g)" kJ·mol-1。由此可知焦炭与水蒸气反应的热化学方程式为：C(s)+H2O(g)=CO(g)+H2(g) ,则为
| A．+131.3 kJ·mol-1 | B．-131.3 kJ·mol-1 |
| C．+352.3 kJ·mol-1 | D．-352.3 kJ·mol-1 |
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