Chemistry Practice Problems Hess's Law Practice Problems Solution: From the enthalpies of reaction 2C(s) + O2(g) → 2C...

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Solution: From the enthalpies of reaction 2C(s) + O2(g) → 2CO(g)                             ΔH = -221.0 kJ 2C(s) + O2(g) + 4H2(g) → 2CH3OH(g)       ΔH = -402.4kJ calculate ΔH for the reaction:CO(g) + 2H2 → CH3OH(g) Express your answer with the appropriate units.

Problem

From the enthalpies of reaction 

2C(s) + O2(g) → 2CO(g)                             ΔH = -221.0 kJ 

2C(s) + O2(g) + 4H2(g) → 2CH3OH(g)       ΔH = -402.4kJ 

calculate ΔH for the reaction:

CO(g) + 2H2 → CH3OH(g) 

Express your answer with the appropriate units.


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