2g碳与水蒸气反应生成CO和H 2 ,需吸收21.88kJ热量,此反应的热化学方程式为 ( )
A.
C + H 2 O ==CO + H 2 Δ H ==+131.3kJ·mol —1
B.
C(s)+ H 2 O(g) ==CO(g) + H 2 (g)Δ H ==+10.94kJ·mol —1
C.
C(s)+ H 2 O(g) ==CO(g) + H 2 (g)Δ H ==-131.3kJ·mol —1
D.
C(s)+ H 2 O(g) ==CO(g) + H 2 (g)Δ H ==+131.3kJ·mol —1