At high pressure the following reaction is zero order.
Which of the following options are correct for this reaction?
for a zero-order reaction
R=k[A]0
R=k where R is the rate of reaction and k is Rate constant and A is the molar concentration of reactant,
Thus Statement (i) is true.
Thus Statement (ii) is false, As Rate does not depend upon the concentration of ammonia.
Since the rate of decomposition of ammonia is equal to the rate constant (a constant value) the decomposition of ammonia will continue until ammonia does not vanish completely.
Thus making option (iii) correct.
In the presence of a catalyst at high-pressure, gas molecules of ammonia saturate the surface of the catalyst thus a further change in pressure does not alter the amount of ammonia on the surface of the catalyst, hence no effect of the increase in pressure.
Thus making option (iv) incorrect.