Question

Which of the following will permanently change the ratio of products to reactants in an equilibrium...

Which of the following will permanently change the ratio of products to reactants in an equilibrium mixture for a chemical reaction involving gaseous species?(a) increasing the temperature (b) adding a catalyst(c) addition of gaseous reactants(d) answers a and c(e) answers b and c

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Homework Answers

Answer #1

a) increasing the temperature

Explanation

aA + bB <-----> cC + dD

Equillibrium constant , K = [C]c[D]d/[A]a[B]b

if gaseous reactants added more products also form, so the equillibrium constant will not change

if Catalyst added it will increase the rate of reaction but it will not change the rate of reaction

Temperature(T) related to the equillibrium constant by the following equation

∆G° = - RTlnK

where,

∆G° = standard free energy change

R = gas constant

So , when temperature changed equillibrium constant also changed

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