Problem: Given the values of ΔGf° given below in kJ/mol calculate the value of ΔG° in kJ for the reaction,NH3(g) + HBr(g) => NH4Br(s)ΔGf° (NH3(g)) = -17ΔGf° (HBr(g)) = -52ΔGf° (NH4Br(s)) = -177a. 108 kJb. 212 kJc. -108 kJd. -212 kJe. -246 kJ

FREE Expert Solution

We’re being asked to calculate the value of ΔG° in kJ for the given reaction:

NH3(g) + HBr(g) → NH4Br(s)



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


ΔG°rxn=ΔG°f, prod-ΔG°f, react


The values for ΔG˚f can be looked up in textbooks or online:

83% (142 ratings)
View Complete Written Solution
Problem Details

Given the values of ΔGf° given below in kJ/mol calculate the value of ΔG° in kJ for the reaction,

NH3(g) + HBr(g) => NH4Br(s)

ΔGf° (NH3(g)) = -17

ΔGf° (HBr(g)) = -52

ΔGf° (NH4Br(s)) = -177

a. 108 kJ
b. 212 kJ
c. -108 kJ
d. -212 kJ
e. -246 kJ

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

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.