Question

The rate constant for a particular second order reaction is 2.4 x 10-2 M-1 s-1 at 35∘C. If the initial concentration of the reactant is 1.20 M, what is the concentration (in M) after 4 minutes?

Answer 1

Answer:

$C_2=0.21M$

Explanation:

From the question we are told that:

Rate constant $K=2.4 x*10^{-2} M-1 s-1$

Temperature $T=35^o$

Initial concentration $C_1=1.20M$

Time $T=4min=>240sec$

Generally the equation for  second order reacion is mathematically given by

$\frac{1}{C_2} = \frac{1}{C_1} +Kt$

$\frac{1}{C_2} = \frac{1}{1.2 } +2.4 * 10^{-2} *240$

$\frac{1}{C_2} = 4.8$

$C_2=0.21M$