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28 June, 08:17

2 upper N upper o upper c l double-headed arrow 2 upper N upper O (g) plus upper C l subscript 2 (g).

At equilibrium, the concentrations are as follows.

[NOCl] = 1.4 ' 10-2 M

[NO] = 1.2 ' 10-3 M

[Cl2] = 2.2 ' 10-3 M

What is the value of Keq for the reaction expressed in scientific notation?

1.6 ' 10-5

6.2 ' 10-4

6.2 ' 104

1.6 ' 105

+2
Answers (1)
  1. 28 June, 08:32
    0
    1.6x10^-5

    Explanation:

    Step 1:

    The balanced equation for the reaction.

    This is illustrated below:

    2NOCl 2NO + Cl2

    Step 2:

    Data obtained from the question.

    [NOCl] = 1.4x10^-2 M

    [NO] = 1.2x10^-3 M

    [Cl2] = 2.2x10^-3 M

    Equilibrium constant, K = ?

    Step 3:

    Determination of the equilibrium constant.

    The equilibrium constant for the above equation can be written as:

    K = [NO]^2 [Cl2] / [NOCl]^2

    Inputing the values of the [NO], [Cl2] and [NOCl], the equilibrium constant is:

    K = [NO]^2 [Cl2] / [NOCl]^2

    K = (1.2x10^-3) ^2 x (2.2x10^-3) / (1.4x10^-2) ^2

    K = 1.6x10^-5
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