1.
(2023高二上·苍南月考)
实验测得:101 kPa时,1 mol H2完全燃烧生成液态水,放出285.8 kJ的热量;1 mol CH4完全燃烧生成液态水和CO2 , 放出890.3 kJ的热量。下列热化学方程式书写正确的是( )
A . 2H2(g)+O2(g)=2H2O(l) ΔH=−571.6 kJ·mol−1
B . CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=−890.3 kJ
C . CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH=−890.3 kJ·mol−1
D . CH4(g)+2O2(g)=CO2(g)+2H2O(l) ΔH=+890.3 kJ·mol−1