Question

in a chemical equilibrium a + b give rise to C + D when 1 mole each of the two reactants are mixed 0.4 mole each of the products are formed the equilibrium constant is

Answer 1

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Answer 2

Given:

In a chemical equilibrium a+b=c+d when one mole each of the two reactant are mixed 0.4 moles each of the product are formed

To find:

Find equilibrium constant

Solution:

From given, we have,

a chemical equilibrium a+b=c+d

The equilibrium constant,

Kc = [c][d] / [a][b]

when one mole each of the two reactant are mixed 0.4 moles each of the product are formed

1 mole = x reactants + 0.4 products

1 mole - 0.4 products = x reactants

x reactants = 0.6 moles

therefore, when [c] = [d] = 0.4 moles

[a] = [b] = 0.6 moles

Therefore, the equilibrium constant,

Kc = (0.4 × 0.4)/(0.6 × 0.6)

Kc = 4/9

Therefore, the equilibrium constant Kc = 4/9