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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
1 views

. For the reaction
N 2 O 4 ( g ) 2 NO ( g )    the equilibrium constant K has the value 8.1 × 10 3 at a particular temperature. If the concentration of N2O4(g) is found to be 5.4 × 10 4 M in the equilibrium system, what is the concentration of NO2(g) under these conditions?

Interpretation Introduction

Interpretation:

The concentration of NO2g is to be calculated.

Concept Introduction:

In a chemical equation when the number of atoms of an element on the left-hand side is equal to the number of atoms of that element on the right-hand side, it is known as a balanced chemical equation. The balancing of a chemical equation is done to follow the law of conservation of mass.

The chemical equilibrium is the state in which the rates of both forward and backward reactions become equal. The concentration of both reactants and products do not change on reaching an equilibrium state.

The general chemical equation is shown below.

aA+bBcC+dD

The general equilibrium expression for a reaction is shown below.

K=CcDdAaBb.

Explanation

The values of K and concentration of N2O4 are given to be 8.1×103 and 5.4×104M respectively.

The given chemical equation is shown below.

N2O4g2NO2g

The general equilibrium expression for a reaction is shown below.

K=NO22N2O4

Rearrange an above expression to calculate the concentration of NO2.

NO22=K×N2O4 (1)

Substitute the values of K and N2O4 in the equation (1)

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