Question

Determine whether each statement is True(T) or False(F). (a) ____ The presence of a homogeneous catalyst cannot change the equilibrium composition of a system. (b) ____ For θ << 1 the Langmuir isotherm reduces to the Freudlich isotherm with a = 1. (c) ____ A catalyst does not appear in the overall reaction. (d) ____ In homogeneous catalysis doubling the catalyst concentration will not change the rate. (e) ____ In homogeneous catalysis the catalyust does not appear in any of the steps of the reaction. (f) ____ For a homogeneous reaction Ј = dξ/dt where Ј is the conversion rate and ξ is the extent of reaction.

Answer 1

a) False : the presence of homogeneous catalyst may change the equilibrium composition of system, it may not alter the equilibrium constant although

b) True

c) True .The catalyst does not appear in the overall reaction as its concentration remains the same in a reaction

d) it is true :

e) False : it do appear in the chemical reaction steps however does not appear in the net reaction step . As it is consumed in the intial steps while it is regenerated in the final step of reaction

f) True .