Atoms and Molecules

Question 29

The Figure below is the reaction co-ordinate diagram for the hypothetical reaction

k₁
A (g) + BC (g) AB (g) + C (g)
k_-1

(a) Select the action(s) that would increase the equilibrium yield
    (i) Decreasing the temperature of the reaction.
    (ii) Adding a catalyst
    (iii) Reducing the concentration of A
    (iv) Changing the mechanism of the reaction
    (v) Increasing the pressure of the reaction
    (vi) Decreasing the pressure of the reaction

(b) Select the true statement(s) below
    (i) k₁ > k_-1
    (ii) k₁ < k_-1
    (iii) k₁/k_-1 is greater than one (iv) the equilibrium constant is less than one
    (v) k₁ increases with an increase in temperature but k_-1 does not
    (vi) the activation energy in the forward direction is greater than that in the reverse direction.
    (vii) the activation energy in the forward direction is greater than the heat of reaction.

Answer

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This page was last updated by Martin Chaplin
on 29 August, 2003