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  • Consider the Arrhenius equation given below and mark the correct option. a-E /RT\; k = A \; e (i) Rate constant increases exponentially with increasing activation energy and decreasing temperature.

Consider the Arrhenius equation given below and mark the correct option. k = A \; e^{-E_{a} /RT}

(i) Rate constant increases exponentially with increasing activation energy and decreasing temperature.

(ii) Rate constant decreases exponentially with increasing activation energy and decreasing temperature.

(iii) Rate constant increases exponentially with decreasing activation energy and decreasing temperature.

(iv) Rate constant increases exponentially with decreasing activation energy and increasing temperature

 

Answers (1)

The answer is the option (iv). Increase in T leads to an increase in -\frac{E_{a}}{RT}  and thus, an increase in k. Similarly, a decrease in E_{a}  leads to an increase in -\frac{E_{a}}{RT}  and thus, an increase in k.

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