已知:CH4(g)+H2O(g)=CO(g)+3H2(g)△H=+206.2kJ?mol-1CH4(g)+CO2(g)=2CO(g)+2H2(g)△H=-
已知:CH4(g)+H2O(g)=CO(g)+3H2(g)△H=+206.2kJ?mol-1CH4(g)+CO2(g)=2CO(g)+2H2(g)△H=-247.4kJ?...
已知:CH4(g)+H2O(g)=CO(g)+3H2(g)△H=+206.2kJ?mol-1CH4(g)+CO2(g)=2CO(g)+2H2(g)△H=-247.4kJ?mol-1CH4(g)与H2O(g)反应生成CO2(g)和H2(g)的热化学方程式为______.
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①CH4(g)+H2O(g)=CO(g)+3H2(g)△H=+206.2kJ?mol-1
②CH4(g)+CO2(g)=2CO(g)+2H2(g)△H=-247.4kJ?mol-1
结合盖斯定律①×2-②得到CH4(g)与H2O(g)反应生成CO2(g)和H2(g)的热化学方程式为:CH4(g)+2H2O(g)=CO2(g)+4H2(g)△H=+659.8kJ?mol-1,
故答案为:CH4(g)+2H2O(g)=CO2(g)+4H2(g)△H=+659.8kJ?mol-1.
②CH4(g)+CO2(g)=2CO(g)+2H2(g)△H=-247.4kJ?mol-1
结合盖斯定律①×2-②得到CH4(g)与H2O(g)反应生成CO2(g)和H2(g)的热化学方程式为:CH4(g)+2H2O(g)=CO2(g)+4H2(g)△H=+659.8kJ?mol-1,
故答案为:CH4(g)+2H2O(g)=CO2(g)+4H2(g)△H=+659.8kJ?mol-1.
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