Answered: Guldberg and Waage proposed the…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter17: Equilibrium

Section: Chapter Questions

Problem 13CR

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Question

Guldberg and Waage proposed the definition of the equilib-rium constant as a certain ratio of concentrations.What relation-ship allows us to use a particular ratio of partial pressures(for agaseous reaction) to express an equilibrium constant? Explain.

Expert Solution

Step 1

For a reaction:

$a A + b B ⇌ c C + d D$

Equilibrium constant as a ratio of concentrations is expressed as:

$K_{c} = \frac{{[D]}^{d} \times {[C]}^{c}}{{[B]}^{b} \times {[A]}^{a}}$

All the concentrations are at equilibrium and a, b, c and d are the stoichiometric coefficients.

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