.已知H2(g)、C2H4(g)和C2H5OH(l)的燃烧热分别是-285.8 kJ/mol、-1411.0kJ/mol和-1366.8 kJ/mol,则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的ΔH为 ( )
A.-44.2 kJ/mol | B.+44.2 kJ/mol | C.-330 kJ/mol | D.+330 kJ/mol |
.已知H2(g)、C2H4(g)和C2H5OH(l)的燃烧热分别是-285.8 kJ/mol、-1411.0kJ/mol和-1366.8 kJ/mol,则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的ΔH为 ( )
A.-44.2 kJ/mol | B.+44.2 kJ/mol | C.-330 kJ/mol | D.+330 kJ/mol |