question_answer 64)

  At high pressure the following reaction is zero order. Which of the following options are correct for this reaction? (a) Rate of reaction = Rate constant (b) Rate of the reaction depends on concentration of ammonia (c) Rate of decomposition of ammonia will remain constant until ammonia disappears completely (d) Further increase in pressure will change the rate of reaction

Answer:

                  (a, c, d) Given, chemical reaction is At very high pressure reaction become independent of concentration of ammonia i.e., zero order reaction Hence,                       Rate =        Rate = k (a) Rate of reaction = Rate constant (b) Rate of decomposition of ammonia will rem remain constant until ammonia disappears completely. (c) Since, formation of ammonia is a reversible process further increase in pressure will change the rate of reaction. According to Le-Chatelier principle increase in pressure will favor in backward reaction.