已知H2(g)+1/2O2(g) =H2O(l);△H= -285.8 kJ·molˉ1
CO(g)+1/2O2(g)=CO2 (g);△H= -282.9 kJ·molˉ1某H2和CO的混合气体完全燃烧时放出113.74kJ热量,同时生成3.6g液态水,则原混合气体中H2和CO的物质的量之比为
A.2∶1 | B.1∶2 | C.1∶1 | D.2∶3 |
已知H2(g)+1/2O2(g) =H2O(l);△H= -285.8 kJ·molˉ1
CO(g)+1/2O2(g)=CO2 (g);△H= -282.9 kJ·molˉ1某H2和CO的混合气体完全燃烧时放出113.74kJ热量,同时生成3.6g液态水,则原混合气体中H2和CO的物质的量之比为
A.2∶1 | B.1∶2 | C.1∶1 | D.2∶3 |