If a reaction is nth order the half-life period ________ of the initial concentration of the reactants.

varies inversely as (n-1)th power

varies directly as (n-1)th power

In a reaction, 2A2 + B2 → 2A2B, when the reactant A will disappear?

half the rate that B will decrease

the same rate that B will decrease

double the rate that A2B will form

twice the rate that B will decrease

For reaction system given below, volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to O2 and second order with respect to NO, what will be the change in the rate of reaction?

diminish to one-fourth of its initial value

diminish to one-eight of its initial value

increase to eight times of its initial value

increase to four times of its initial value

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1.	If a reaction is nth order the half-life period ________ of the initial concentration of the reactants.
A.	is independent
B.	varies inversely as (n-1)th power
C.	varies inversely as nth power
D.	varies directly as (n-1)th power
Answer» C. varies inversely as nth power

Discussion

2.	In a reaction, 2A2 + B2 → 2A2B, when the reactant A will disappear?
A.	half the rate that B will decrease
B.	the same rate that B will decrease
C.	double the rate that A2B will form
D.	twice the rate that B will decrease
Answer» E.

Discussion

3.	Rate = If the volume of reaction vessel is suddenly reduced to \(\frac{1}{4}\)th of initial value. How new rate will be affected?
A.	\(\frac{1}{10}\)
B.	\(\frac{1}{8}\)
C.	8
D.	16
Answer» E.

Discussion

4.	For reaction system given below, volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to O2 and second order with respect to NO, what will be the change in the rate of reaction?
A.	2NO(g) + O2(g) + 2NO2(g)
B.	diminish to one-fourth of its initial value
C.	diminish to one-eight of its initial value
D.	increase to eight times of its initial value
E.	increase to four times of its initial value
Answer» D. increase to eight times of its initial value

Discussion

Explore topic-wise MCQs in Organic Chemistry Questions and Answers.

If a reaction is nth order the half-life period ________ of the initial concentration of the reactants.

In a reaction, 2A2 + B2 → 2A2B, when the reactant A will disappear?

Rate = If the volume of reaction vessel is suddenly reduced to \(\frac{1}{4}\)th of initial value. How new rate will be affected?

For reaction system given below, volume is suddenly reduced to half of its value by increasing the pressure on it. If the reaction is of first order with respect to O2 and second order with respect to NO, what will be the change in the rate of reaction?