Answer to Question #130524 in General Chemistry for Dr. Horus

Question

For a reaction with the rate constant of 0.6sec-1 and initial concentration of reactant of 0.2mol/dm3,what is the concentration of reactant after 0.5min?

Answer 1

Since the rate constant is s – 1, this is a first order reaction. Consequently, the concentration of the reactant at time t can be calculated by the formula:

c = c₀*e^-kt, where k is the rate constant, t is the time, and c₀ is the initial concentration.

So, c = 0.2 * e^-0.6*30 = 3.04*10^-9 mol/dm³