Question

Consider the Arrhenius equation given below and mark the correct option.

$k = Ae^{- E_{a}/RT}$

• A. Rate constant increase exponentially with increasing activation energy and decreasing temperature.
• B. Rate constant decrease exponentially with increasing activation energy and deceasing temperature.
• C. Rate constant increases expontially with decreasing activation energy and decreasing temperature.
• D. Rate constant increases exponentially with decreasing activation energy and increasing temperature.

Answer 1

Answer: (D)

Rate constant increases exponentially with decreasing

activation energy and increasing temperature.

Answer 2

$k = Ae^{- E_{a}/RT}$

On increasing temperature and decreasing activation energy $E_{a}/RT$ term overall decreased thus, $- E_{a}/RT$term increases and rate constant increases exponentially.