Question

The rate of a chemical reaction doubles for every $${10^ \circ }C$$  rise of temperature. If the temperature is raised by $${50^ \circ }C,$$  the rate of the reaction increases by about :

A. 10 times
B. 24 times
C. 32 times  
D. 64 times
Answer :   32 times
Solution :
Since for every $${10^ \circ }C$$  rise in temperature rate doubles for $${50^ \circ }C$$  rise in temp increase in reaction rate $$ = {2^5} = 32\,{\text{times}}$$

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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