摘要:已知H2(g).C2H4(g)和C2H5OH(1)的燃烧热分别是285.8 kJ·mol-1.1411.0 kJ·mol-1和1366.8 kJ mol-1.则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的△H为A A.-44.2 kJ·mol-1 B.+44.2 kJ·mol-1 C.-330 kJ·mol-1 D.+330 kJ·mol-1
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已知H2(g)、C2H4(g)和C2H5OH(l)的燃烧热分别是-285.8kJ?mol-1、-1411.0kJ?mol-1和-1366.8kJ?mol-1,则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的△H为
A.-44.2kJ?mol-1 B.+44.2kJ?mol-1
C.-330kJ?mol-1 D.+330kJ?mol-1
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已知H2(g)、C2H4(g)和C2H5OH(l)的燃烧热分别是-285.8kJ·mol-1、-1411.0kJ·mol-1和-1366.8kJ·mol-1,则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的△H为
A.-44.2kJ·mol-1 B.+44.2kJ·mol-1
C.-330kJ·mol-1 D.+330kJ·mol-1
查看习题详情和答案>>已知H2(g)、C2H4(g)和C2H5OH(1)的燃烧热分别是-285.8kJ·mol-1、-1411.0kJ·mol-1和-1366.8kJ·mol-1,则由C2H4(g)和H2O(l)反应生成C2H5OH(l)的△H为( )
A.-44.2kJ·mol-1 B.+44.2kJ·mlo-1
C.-330kJ·mol-1 D.+330kJ·mlo-1
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