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
When a biochemical reaction is carried out in laboratory from outside of human body in the absence of enzyme, the rate of reaction obtained is 10-6 times, then activation energy of the reaction in the presence of enzyme is
6/RT
P is required
Different from Eα obtained in laboratory
Cannot say any things
For a first order reaction A → B, the reaction rate at reactant concentration of 0.01 M is found to be 2.0 × 10-5 mol L-1s-1. The half-life period of the reaction is
220 s
30 s
300 s
347 s
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
The rate constants k1 and k2 for two different reaction are 1016.e-2000/T and 1015.e-1000/T, respectively. The temperature at which k1 = k2 is
1000 K
2000 K
The temperature dependance of rate constant (k) of a chemical reaction is written in terms of Arrhenius equation, k = Ae-E*/RT. Activation energy (E*) of the reaction can be calculated by plotting
log k vs 1/T
k vs T
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
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 representation of rate of reaction in terms of concentration of the reactants is known as ______________
partial pressure
rate law
average rate
total rate
