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1.
(2020高二上·宜宾月考)
1g CH3OH(l)完全燃烧生成液态水放出22.68kJ热量。下列热化学方程式正确的是( )
A . 2CH3OH(l)+3O2(g) = 2CO2(g)+4H2O(l) ΔH=-1451.52 kJ·mol-1
B . 2CH3OH(l)+3O2(g) = 2CO2(g)+4H2O(g) ΔH= + 1451.52 kJ·mol-1
C . CH3OH(l)+ O2(g) = CO2(g)+2H2O(l) ΔH= + 725.76 kJ·mol-1
D . CH3OH(l)+ O2(g) = CO2(g)+2H2O(g) ΔH= - 725.76 kJ·mol-1
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