Question

For the following exothermic reaction at equilibrium

A(g) + B(g) ⇌ C(g)

Which of the following conditions will cause the reaction to produce more products?

Select as many answers as are appropriate however marks will be deducted for incorrect guesses.

Select one or more:

Increasing the volume

Increasing partial pressure of "A"

Raising the temperature

Decreasing the volume

Increasing partial pressure of "C"

Increasing partial pressure of "B"

Lowering the temperature

Answer 1

Answers:

Increasing partial pressure of A

Decreasing volume

Increasing partial pressure of B and

Lowering temperature.

Explanation:

K_p= p_c/(p_a)(p_b)

Now K_p for a reaction is always constant at a particular temperature. Hence, if we increase partial pressure of A or B the reaction will shift forward to compensate the partial pressure of C to a value required to mainatim K_p constant.

On decreasing volume pressure of all the components will drop and if that happens we can see that the denominator term in K_p will decraedewith more extent. Now, to maintain the K_p value same the reaction will shift forward to increase pressure of C.

And exothermic reaction always moves forward on decraeside temperature and vice versa.