已知:2H2(g)+O2(g)===2H2O(g) ΔH=-483.6 kJ·mol-1
H2(g)+O2(g)===H2O(l) ΔH=-285.8 kJ·mol-1
由此可知,在等温下蒸发45 g液态水需吸收的热量( )
A.483.6 kJ | B.110 kJ | C.285.8 kJ | D.221 Kj |
已知:2H2(g)+O2(g)===2H2O(g) ΔH=-483.6 kJ·mol-1
H2(g)+O2(g)===H2O(l) ΔH=-285.8 kJ·mol-1
由此可知,在等温下蒸发45 g液态水需吸收的热量( )
A.483.6 kJ | B.110 kJ | C.285.8 kJ | D.221 Kj |