Consider the following equilibrium :Δ HCl(g) ⇌ H⁺(aq) + Cl⁻(aq) In a closed vessel, HCl(g) was in equilibrium with H⁺(aq) and Cl⁻(aq). The total volume of the solution was one liter, the temperature o

Question

Consider the following equilibrium :Δ

HCl(g) $⇌$ H⁺(aq) + Cl⁻(aq)

In a closed vessel, HCl(g) was in equilibrium with H⁺(aq) and Cl⁻(aq). The total volume of the solution was one liter, the temperature of the solution was 298 K, and the equilibrium partial pressure of HCl(g) was 10^-8 bar. The aqueous solution was labeled as "solution I".

Given:

$Δ G_{f}^{0} (H Cl, g) = - 23 k c a l$ /mol ; $Δ G_{f}^{0} (C l^{-}, a q) = - 31.23 k c a l$ /mol ; $R = 2 c a l / K - m o l$ ; $ln 10 = 2.3$ .

TestHub · Accepted Answer

Δ G ∘ = ( 0 − 31.23 ) − ( − 23 ) ​ = − 8.23 Kcal mol − 1 Δ G ∘ = − RT ln K eq ​ ln K eq ​ = 2 × 298 + 8.23 × 1000 ​ = + 13.8 K eq ​ = 1 0 + 6 1 0 + 6 = 1 0 − 8 [ H + ] 2 ​ [ H + ] = 0.1 ⇒ pH = 1 Ans ​

Chemistry - Ionic Equilibrium Question with Solution | TestHub

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