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
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
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
For exothermic reaction, the energy of activation of the reactants is
Equal to the energy of activation of products
Less than the energy of activation of products.
Greater than the energy of activation of products.
Sometimes greater and sometimes less than that of the products.
In gaseous reactions,the units of the rate equation will be ____________
Mol L-1
mol S-1
atm L-1
atm S-1
If 60% of a first order reaction was completed in 60 mins, 50% of the same reaction would be completed approximately in ______________.
(log 4 = 0.60, log 5 = 0.69)
50 min
45 min
60 min
40 min
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.