优质解答
(1)①已知:Ⅰ.H2(g)+12O2(g)═H2O(g)△H2=-242kJ/mol-1Ⅱ.CH2OH(g)+32O2═CO2(g)+2H2O(g)△H2=-676kJ/mol-1根据盖斯定律,Ⅰ×3-Ⅱ可得:CO2(g)+3H2(g)=CH3OH(g)+H2O(g),△H=3×(-242kJ/...
(1)①已知:Ⅰ.H2(g)+12O2(g)═H2O(g)△H2=-242kJ/mol-1Ⅱ.CH2OH(g)+32O2═CO2(g)+2H2O(g)△H2=-676kJ/mol-1根据盖斯定律,Ⅰ×3-Ⅱ可得:CO2(g)+3H2(g)=CH3OH(g)+H2O(g),△H=3×(-242kJ/...