Question

At standard temperature and pressure, the reaction indicated by the following cquation has an cquilibrium constant, $K_{c}$, equal to $0.021$. $$ 2 \mathrm{HI}(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) $$ Calculate the equilibrium constant, $K_{c}$, for the reverse cquation.

Name: Problem 31, Chapter 14: Chemistry: The Molecular Science
Uploaded: 2021-08-11T20:24:48-08:00
Duration: 1 min 4 s
Channel: Anthony Han
Description: At standard temperature and pressure, the reaction indicated by the following cquation has an cquilibrium constant, Kc, equal to 0.021. 2 HI(g) ⇌H2( g)+I2( g) Calculate the equilibrium constant, Kc, for the reverse cquation.

   At standard temperature and pressure, the reaction indicated by the following cquation has an cquilibrium constant, $K_{c}$, equal to $0.021$.
$$
2 \mathrm{HI}(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})
$$
Calculate the equilibrium constant, $K_{c}$, for the reverse cquation.

Chemistry: The Molecular Science

John W. Moore,… 4th Edition

Chapter 14, Problem 31

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Solved by Expert Anthony Han

08/11/2021

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At standard temperature and pressure, the reaction indicated by the following cquation has an cquilibrium constant, $K_{c}$, equal to $0.021$. $$ 2 \mathrm{HI}(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g}) $$ Calculate the equilibrium constant, $K_{c}$, for the reverse cquation.

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Key Concepts

Reversibility and Reciprocal Relationship

In reversible reactions, the equilibrium constant for the reverse reaction is the reciprocal of the equilibrium constant for the forward reaction. This principle is essential when converting between the two and understanding the inherent symmetry in reaction dynamics.

Chemical Equilibrium

Chemical equilibrium refers to the state in a reversible reaction where the forward and reverse reactions occur at the same rate, leading to constant concentrations of reactants and products. This concept is fundamental in predicting how a reaction will behave under a given set of conditions.

Equilibrium Constant

The equilibrium constant is a numerical value that relates the concentrations of products and reactants at equilibrium according to their stoichiometric coefficients. It provides insight into the position of equilibrium, indicating whether products or reactants are favored.

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