Chemistry Gibbs Free Energy Solution: Consider the reaction HCl (g) + NH3 (g) → NH4Cl (s...

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Solution: Consider the reaction HCl (g) + NH3 (g) → NH4Cl (s) Using the Standard thermodynamic data, calculate the equilibrium constant for this reaction at 298.15 K. ANSWER: ____________

Problem

Consider the reaction 

HCl (g) + NH3 (g) → NH4Cl (s) 

Using the Standard thermodynamic data, calculate the equilibrium constant for this reaction at 298.15 K. 

ANSWER: ____________


Solution

We’re being asked to determine the equilibrium constant (K) at 298.15 K for the given reaction:

HCl(g) + NH3(g)  NH4Cl(s)


Recall that ΔG˚rxn and K are related to each other:


ΔG°rxn=-RTlnK


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


ΔG°rxn=ΔG°f, prod-ΔG°f, react


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