4 (a) Calculate the value of Kc for the reaction:PCl5 (g) PCl3 (g) + Cl2 (g) ΔH = Positive Given that when 8.4 mol of PCl5 (g) is mixed with 1.8 mol of PCl3 (g) and allowed to come to equilibrium in a 10 dm3 container the amount of PCl5 (g) at equilibrium is 7.2 mol. Kc = (b) Explain the effect of the following changes below on the value of Kc: Increasing temperature Lowering the concentration of chlorine (Cl2) Addition of a catalyst

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Answered: (a) Calculate the value of Kc for the…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 15P

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4 (a) Calculate the value of Kc for the reaction:

PCl_{5 (g)} PCl₃ _(g) + Cl₂ _(g) ΔH = Positive

Given that when 8.4 mol of PCl₅ _(g) is mixed with 1.8 mol of PCl₃ _(g) and allowed to come to equilibrium in a 10 dm³ container the amount of PCl₅ _(g) at equilibrium is 7.2 mol.

Kc =

(b) Explain the effect of the following changes below on the value of Kc:

Increasing temperature

Lowering the concentration of chlorine (Cl₂)

Addition of a catalyst

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