Question

The rate constant of a reaction will be equal to the pre exponential factor when:

• A. Temperature in centigrade is zero
• B. The absolute temperature is zero
• C. The absolute temperature is infinity
• D. None of these

Answer 1

The correct option is C The absolute temperature is infinity

$k=A{e}^{\frac{-E_a}{RT}}$
(A = pre exponential factor)
When $T\to \infty$
$k=A{e}^{\frac{-E_a}{R\infty }}$
$k=A{e}^0[-\frac{E_a}{R\infty }=0]$
$\therefore k=A$