Suppose 1.000 mol CO and 3.000 mol H2 are put in a 10.00-L vessel at 1200 K. The equilibrium constant Kc for
equals 3.92. Find the equilibrium composition of the reaction mixture.
Interpretation:
The equilibrium composition of the given reaction mixture has to be found.
Concept introduction:
Equilibrium constant
Consider the reaction where the reactant A is giving product B.
On rearranging,
Where,
Answer to Problem 14.71QP
The equilibrium mixture contains,
Explanation of Solution
Given,
The equilibrium constant
The initial amount of
The initial amount of
The volume of the vessel
To find initial concentration of reactants
The initial concentrations of the gaseous reactant are found as given below.
To find the equilibrium composition.
Using the table approach, the equilibrium concentrations of the reactants and the products can be found.
The equilibrium concentration values are then substituted into the equilibrium expression to get the change in concentration x.
Both the sides are multiplied by 27 and taking the square root, we get
On rearranging we get a quadratic equation.
On solving the quadratic equation the value of x obtained.
On solving we get two values for x
It is not possible to lose
The equilibrium composition of the given reaction mixture at
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Chapter 14 Solutions
General Chemistry - Standalone book (MindTap Course List)
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