490kJm的精选

问题详情：    (1)已知：①CH3OH(g)＋H2O(g)===CO2(g)＋3H2(g)ΔH＝＋49.0kJ/mol②CH3OH(g)＋3/2O2(g)===CO2(g)＋2H2O(g)ΔH＝－192.9kJ/mol由上述方程式可知：CH3OH的燃烧热________(填“大于”“等于”或“小于”)192.9kJ/mol。已知...