The rate constant for a certain reaction is k = 6.50*10-3 s-1. If the initial reactant concentration was 0.600 M, what will the concentration be after 3.00 minutes?

Answer: 1.037M

Explanation:

Since the rate constant unit is per seconds, therefore it is a first order reaction.

First order reaction equation is given as

InA = - kt + InAo

Where, Ao is the initial concentration of reactant = 0.600M

A is the concentration of reactant at a specifies time t=3*60=180s

and k is the rate constant

InA = - 6.50*10^-3 * 180 + In (0.6)

InA = - 1.17 + 0.5108

InA = - 1.680

A = e-1.680

A = 1.037M

Therefore the concentration after 3minutes is 1.037M