Question

9. The rate constant, the activation energy and
Arrhenius parameter of a chemical reaction at 25°C
are x s-1, 10x kJ/mol and 2x s-1. Value of rate
constant as T → oo is
(1) XS-1
(2) 2x s-1
(3)
(4) 10x s-1​

Answer 1

Answer:

Value of rate constant = k = 10x s-1

Explanation:

In physical chemistry, the Arrhenius equation is a formula for the temperature dependence of reaction rates

The Arrhenius equation is given as;

k=Ae−Ea/RT

where A is the Arrhenius parameter, R is the gas constant, T the temperature and k is the value of rate constant.

Now as per given condition if temperature approaches infinity then;  

When t→∞

k→A

k = A  

We are given that A = 10x kJ/mol

Value of rate constant = k = 10x s-1