Homework Answers
22. Answer is (B).
23.
X2 + Y + Z = XY + XZ.
Doubling the concentration of X2, the reaction rate gets double. So, its a first order with respect to X2.
Tripling the concentration of Y, the reaction rate gets tripled. So, its a first order with respect to Y.
Doubling the concentration of Z, the reaction rate doen't change. So, its a zero order with respect to Z.
(a) Rate law of the reaction, r = k [X2] [Y].
(b) Since it a overall second order reaction. Hence the unit of rate constant, k = L mole-1 sec-1.
(c) Since the reaction rate is independent of concentration of Z.
(d)
Here rate, r = k [X2] [Y]
Now, for 3X2 and 3y, the rate will increase by 3 x 3 (= 9) times.
(i) rate will increase.
(ii) rate will increase by 9 times.
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