Question

Which of the following statements is incorrect?

A. Activation energy for the forward reaction is equals to activation energy for the reverse reaction  
B. For a reversible reaction, an increase in temperature increases the reaction rate for both the forward and the backward reaction
C. The larger the initial reactant concentration for a second order reaction, the shorter is its half-life.
D. When $$\Delta t$$  is infinitesimally small, the average rate equals the instantaneous rate
Answer :   Activation energy for the forward reaction is equals to activation energy for the reverse reaction
Solution :
$${E_a}\left( {F.R.} \right) \ne {E_a}\left( {B.R.} \right){E_a}$$      can be calculated.

Releted MCQ Question on
Physical Chemistry >> Chemical Kinetics

Releted Question 1

If uranium (mass number 238 and atomic number 92) emits an $$\alpha $$ -particle, the product has mass no. and atomic no.

A. 236 and 92
B. 234 and 90
C. 238 and 90
D. 236 and 90
Releted Question 2

The rate constant of a reaction depends on

A. temperature
B. initial concentration of the reactants
C. time of reaction
D. extent of reaction
Releted Question 3

The specific rate constant of a first order reaction depends on the

A. concentration of the reactant
B. concentration of the product
C. time
D. temperature
Releted Question 4

A catalyst is a substance which

A. increases the equilibrium concentration of the product
B. changes the equilibrium constant of the reaction
C. shortens the time to reach equilibrium
D. supplies energy to the reaction

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Chemical Kinetics


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