已知:2H2(g)+O2(g)=2H2O(l)ΔH=-571.6 kJ·mol-
题型:选择题
问题:
已知:2H2(g)+O2(g)=2H2O(l) ΔH=-571.6 kJ·mol-1
2H2O(g)=2H2(g)+O2(g) ΔH=+483.6 kJ·mol-1
现有1g液态H2O,蒸发时吸收的热量是( )
A.2.44 kJ
B.4.88 kJ
C.44.0 kJ
D.88.0 kJ
已知:2H2(g)+O2(g)=2H2O(l) ΔH=-571.6 kJ·mol-1
2H2O(g)=2H2(g)+O2(g) ΔH=+483.6 kJ·mol-1
现有1g液态H2O,蒸发时吸收的热量是( )
A.2.44 kJ
B.4.88 kJ
C.44.0 kJ
D.88.0 kJ