下列说法正确的是( )A.CH4(g)+2O2(g)===CO2(g)+2H2O(g) ΔH=-801.3k...
问题详情:下列说法正确的是()A.CH4(g)+2O2(g)===CO2(g)+2H2O(g)ΔH=-801.3kJ/mol 结论:CH4的燃烧热为801.3kJ/molB.Sn(s,灰)===Sn(s,白)ΔH=+2.1kJ/mol(灰锡为粉末状)结论:锡制品在寒冷的冬天因易转化为灰锡而损坏C.稀溶液中有:H+(aq...
问题详情:下列说法正确的是()A.CH4(g)+2O2(g)===CO2(g)+2H2O(g)ΔH=-801.3kJ/mol 结论:CH4的燃烧热为801.3kJ/molB.Sn(s,灰)===Sn(s,白)ΔH=+2.1kJ/mol(灰锡为粉末状)结论:锡制品在寒冷的冬天因易转化为灰锡而损坏C.稀溶液中有:H+(aq...