有關7682kJ的精選大全

已知:①2Cu2S(s)+3O2(g)===2Cu2O(s)+2SO2(g) ΔH=-768.2kJ·mol-...
問題詳情:已知:①2Cu2S(s)+3O2(g)===2Cu2O(s)+2SO2(g)ΔH=-768.2kJ·mol-1②2Cu2O(s)+Cu2S(s)===6Cu(s)+SO2(g)ΔH=+116.0kJ·mol-1則Cu2S(s)+O2(g)===2Cu(s)+SO2(g)ΔH=___________________________________。【回答】*-217.4kJ·mol...
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