Question

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

`k = Ae^((-E_a)/(RT)`

Options

• Rate constant increases exponentially with increasing activation energy and decreasing temperature.

• Rate constant decreases exponentially with increasing activation energy and decreasing temperature.

• Rate constant increases exponentially with decreasing activation energy and decreasing temperature.

• Rate constant increases exponentially with decreasing activation energy and increasing temperature.

Answer 1

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

Explanation:

`k = Ae^((-E_a)/(RT)` from the equation it is clear that value of rate constant k increases exponentially with decrease in activation energy Ea and increase in temperature.

As E_a decreases, `(-E_a)/(RT)` increases and k increases

As T increases, `(-E_a)/(RT)` decreases and `(-E_a)/(RT)` increases and k increases.