Chemistry Practice Problems Enthalpy of Formation Practice Problems Solution: Use a standard enthalpies of formation table to de...

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Solution: Use a standard enthalpies of formation table to determine the change in enthalpy for each of these reactions.i) NaOH(s) + HCI(g) → NaCI(s) + H 2O(g)ii) 2 CO(g) + O2(g) → 2 CO2(g) 

Problem

Use a standard enthalpies of formation table to determine the change in enthalpy for each of these reactions.

i) NaOH(s) + HCI(g) → NaCI(s) + H 2O(g)

ii) 2 CO(g) + O2(g) → 2 CO2(g)

 

Solution

ΔH°rxn = ΔH°f (products) - ΔH°f (reactants)

• check if the reaction is balanced because ΔH°f = kJ/mol

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