Problem: Calculate the ΔG°rxn using the following information.2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l)   ΔG°rxn=?ΔH°f (kJ/mol) -207.0, 91.3 , 33.2,  -285.8S°(J/mol∙K) 146.0,  210.8,  240.1,  70.0A) -151 kJB) -85.5 kJC) +50.8 kJD) +222 kJE) -186 kJ

FREE Expert Solution

We’re being asked to determine the ΔG°rxn at 298 K for the given reaction:

2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l)


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.


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Problem Details

Calculate the ΔG°rxn using the following information.
2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l)   ΔG°rxn=?

ΔH°f (kJ/mol) -207.0, 91.3 , 33.2,  -285.8

S°(J/mol∙K) 146.0,  210.8,  240.1,  70.0

A) -151 kJ

B) -85.5 kJ

C) +50.8 kJ

D) +222 kJ

E) -186 kJ

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