Write the expression for the equilibrium constant K p for the following reaction

Question

Write the expression for the equilibrium constant Kp for the following reaction.

Enclose pressures in parentheses and do NOT write the chemical formula as a subscript. For example, enter (PNH3)2 as (P NH3)2 .
If either the numerator or denominator is 1, please enter 1

Write the expression for the equilibrium constant Kp for the following reaction.

Enclose pressures in parentheses and do NOT write the chemical formula as a subscript. For example, enter (PNH3)2 as (P NH3)2.
If either the numerator or denominator is 1, please enter 1

Explanation / Answer

1. The expression for the equilibrium constant Kp for the following reaction.

2Cl2O (g) + 3 O2 (g) <----------> 4 ClO2 (g)

In this reaction all the reactants and product are gases.

So Kp = (P ClO2)4 / (P Cl2O) 2 (P O2)3

(P ClO2) is partial pressure of ClO2

(P Cl2O) is partial pressure of Cl2O

(P O2) is partial pressure of O2

2. The expression for the equilibrium constant Kp for the following reaction.

4CuO(s) <---------> 2Cu2O(s) + O2 (g)

In this reaction there is only one gas (O2), so Kp = partial pressure of oxygen.

  Kp = (P O2)1

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