The sum of powers of the concentration of the reactants in the rate law expression is called _________of that chemical reaction.
order
molecularity
elementary rate
average rate
If 60% of a first order reaction was completed in 60 min, 50% of the same reaction would be completed in approximately
(log 4 = 0.60, log 5 = 0.69)
50 min
45 min
60 min
40 min
The rate of first order reaction is 1.5 × 10-2 mol L-1 min-1 at 0.5 M concentration of the reactant. The half-life of the reaction is
0.383 min
23.1 min
8.73 min
7.53 min
The branch of chemistry which deals with the study of reaction rates and their mechanisms called_______________
Thermodynamics
Chemical kinetics
Chemical equilibrium
Polymer science
3A → B + C
It would be a zero order reaction, when.
The rate of reaction is proportional to square of concentration of A.
The rate of reaction remains same at any concentration of A.
The rate remains unchanged at any concentration of B and C.
The rate of reaction doubles if concentration of B is increased to double.
The reaction A → B follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 h. What is the time taken for the conversion of 0.9 mole of A to 0.675 mole of B?
0.25 h
2 h
1 h
0.5 h
The representation of rate of reaction in terms of concentration of the reactants is known as ______________
partial pressure
rate law
total rate
The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is
-1
-2
1
2
For the reaction 2N2O5 → 4NO2 + O2, rate and rate constant are 1.02 × 10-4 and 3.4 × 10-5 s -1 respectively, then concentration of N2O5 at that time will be
1.732
3
1.02 × 10-4
3.4 × 105
For the reaction
2 A + B → 3C + D
Which of the following does not express the reaction rate?
