Given below are graphs showing the variation in velocity constant with temperature on Kelvin scale. Identify the graph which represents Arrhenius equation.

Step-by-step solution

The Arrhenius equation is k = Ae^ - E_a RT , where k is the rate constant, T is the temperature in Kelvin, E_a is the activation energy, R is the universal gas constant, and A is the pre-exponential factor. k vs T : As T increases, the exponent - E_a RT becomes less negative, so k increases exponentially with T . Graph [B] shows this exponential increase. Taking natural log: k = A - E_a R ( 1 T ) This is a straight line in k vs 1 T with negative slope - E_a R . Graph [D] shows a positive slope, so it is incorrect.