For the reaction 2 NO ( g ) + 2 H 2 ( g ) ⇌ N 2 ( g ) + 2 H 2 O ( g ) it is determined that, at equilibrium at a particular temperature, the concentrations are as follows: [NO( g )] = 8.1 × 10 −3 M, [H 2 ( g )] = 4.1 × 10 −5 M, [N 2 ( g )] = 5.3 × 10 − 2 M, and [H 2 O( g )] = 2.9 × 10 −3 M. Calculate the value of K for the reaction at this temperature.

Q: Expert Answer

Interpretation Introduction Interpretation: The equilibrium concentration values for the species involved in the reaction between NO and H 2 are given. The value of the equilibrium constant ( K ) for the reaction is to be calculated. Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K . To determine: The equilibrium constant ( K ) for the given reaction. Explanation Given The stated reaction is, 2NO ( g ) + 2 H 2 ( g ) ⇌ N 2 ( g ) + 2 H 2 O ( g ) The concentration of [ NO ( g ) ] is 8.1 × 10 − 3 M . The concentration of [ H 2 ( g ) ] is 4.1 × 10 − 5 M . The concentration of [ N 2 ( g ) ] is 5.3 × 10 − 2 M . The concentration of [ H 2 O ( g ) ] is 2.9 × 10 − 3 M . At equilibrium, the equilibrium ratio is expressed by the formula, K = Concentration of products Concentration of reactants Where, K is the equilibrium constant

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Chemistry: An Atoms First Approach

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Steven S. Zumdahl + 1 other

Publisher: Cengage Learning

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Chemistry: An Atoms First Approach

2nd Edition

Steven S. Zumdahl + 1 other

Publisher: Cengage Learning

ISBN: 9781305079243

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Section

Answer 3

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Interpretation Introduction

Interpretation: The equilibrium concentration values for the species involved in the reaction between NO and H2 are given. The value of the equilibrium constant (K) for the reaction is to be calculated.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction. When the equilibrium constant is expressed in terms of concentration, it is represented K .

To determine: The equilibrium constant (K) for the given reaction.

Explanation of Solution

Given

The stated reaction is,

2NO(g)+2H2(g)⇌N2(g)+2H2O(g)

The concentration of [NO(g)] is 8.1×10−3 M .

The concentration of [H2(g)] is 4.1×10−5 M .

The concentration of [N2(g)] is 5.3×10−2 M .

The concentration of [H2O(g)] is 2.9×10−3 M .

At equilibrium, the equilibrium ratio is expressed by the formula,

K=Concentration of productsConcentration of reactants

Where,

K is the equilibrium constant

Chemistry: An Atoms First Approach

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Chemistry: An Atoms First Approach

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