Answered: Explain why pure liquids and solids can…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression ?

Expert Solution

Step 1

Introduction-

The reaction is said to be in equilibrium if both the forward and backward reaction is in same pace. In this kind of reaction, the equilibrium constant expression in the terms of concentration (K_c) is the ratio of product of product concentration to the product of reactant concentration.

Step 2

Explanation-

The concentration of reactants or products that is here pure solid or pure liquid is the ratio of no. of moles to that of volume.

$K_{c} = \frac{No . of Moles}{Volume}$

Number of moles is mass by molar mass.

$No . of Moles = \frac{Mass}{Molar mass}$

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