Problem: For the reaction:2KClO3(s) → 2KCl(s) + 3O2(g)Calculate ΔG°rxn at 25°C.Express your answer using one decimal place.

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FREE Expert Solution

We’re being asked to determine the Gibbs free energy (ΔG°rxn) at 25°C for the given reaction:

2 KClO(s) → 2 KCl (s) + 3 O(g) 


We’re given the ΔH˚f and S˚ of each reactant and product:


Substance

ΔH˚f (kJ/mol)

S˚ (J/mol • K)

KClO(s)

–397.7

143.1

KCl (s)

 436.5

82.6

O(g)

0

205.2


We can use the following equation to solve for ΔG˚rxn:


ΔG°rxn=ΔH°rxn-TΔS°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.


84% (70 ratings)
Problem Details

For the reaction:

2KClO3(s) → 2KCl(s) + 3O2(g)

Calculate ΔG°rxn at 25°C.

Express your answer using one decimal place.

Solution Details

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Our tutors have indicated that to solve this problem you will need to apply the Gibbs Free Energy concept. You can view video lessons to learn Gibbs Free Energy Or if you need more Gibbs Free Energy practice, you can also practice Gibbs Free Energy practice problems .

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Based on our data, we think this problem is relevant for Professor Esfandiari's class at SJSU.