Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g)+H 2 O(g) ⇋ CO 2 (g)+H 2 (g).

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Question:

Using the standard enthalpies of formation, what is the standard enthalpy of reaction? CO(g)+H 2 O(g) ⇋ CO 2 (g)+H 2 (g).

Answer:

The general vitality change in a response(reaction) is equivalent to the response enthalpy. It is equivalent to the complete standard enthalpies of development of the items less the all out standard enthalpies of arrangement of the reactants. The indication of the response enthalpy shows the kind of response. In the event that it is negative, generally speaking warms discharged in the response and the response is said to be exothermic. On the off chance that it is sure, heat is invested in the general response and the response is said to be endothermic.
Answer and Explanation:
The standard enthalpies of arrangement of the included vaporous species, from the thermodynamic table, are:
ΔH0f(H2)=0
ΔH0f(CO)=−110.5kJ/mol
ΔH0f(CO2)=−393.5kJ/mol[MathJaxfullWidth=′false′ΔH=(0+(−393.5)−(−110.5)−241.8)k
ΔH0f(H2O)=241.8kJ/mol
The enthalpy change of a response is equivalent to add up to enthalpy of development of items less the complete enthalpy of arrangement of reactants.
Hence, for the given response:
ΔH=ΔH0f(H2)+ΔH0f(CO2)−ΔH0f(CO)−ΔH0f(H2O)
⇒ΔH=−524.8kJ/mol

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Sam Professor 2 years 1 Answer 1100 views 0

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