We’re being asked to determine the Gibbs free energy (ΔG°rxn) at 25°C for the given reaction:
2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)
We’re given the ΔH˚f and S˚ of each reactant and product:
S˚ (J/mol • K)
We can use the following equation to solve for ΔG˚rxn:
For this problem, we need to do the following steps:
Step 1: Calculate ΔH˚rxn.
Step 2: Calculate ΔS˚rxn.
Step 3: Use ΔH˚rxn and ΔS˚rxn to calculate for ΔG˚rxn.
For the reaction:
2KClO3(s) → 2KCl(s) + 3O2(g)
Calculate ΔGºrxn at 25ºC.
Express your answer using one decimal place.
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What scientific concept do you need to know in order to solve this problem?
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