How many moles of 'A' are present at time, t? — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The rate of reaction is r = - (1/n1) d[A]/dt = K[A]. Integrating this differential equation gives d[A]/[A] = -n1 K dt, leading to [A] = a·e^-n1Kt. Therefore, correct answer is B.