Question

The rate constant ,the activation energy and Arrhenius parameter of a chemical reaction at 25° C are x s ^-1 , 10 x KJ/mol and 2xs^-1. Value of rate constant as t→∞ is
(1) xs^-1
(2) 2x s^-1
(3) ∞
(4) 10x s^-1

Answer 1

Rate constant K = $A = 1.6\times 10^{-14} S^{-1}$

Explanation:

According to the arrhenius equations,

$K = A\times e^{\frac{-E_a}{R\times t}}$

where ,

k = rate constant

A = Frequency factor

e = mathematical quantity

R = gas constant

$E_a$ = activation energy,

thus,

As,

$T \rightarrow \infty$

Then,  

$K = A\times e^{\frac{-E_A}{R\times\infty }}$

so,

k = A

Where A is a arrhenius parameter , $A = 1.6\times 10^{-14} S^{-1}$