Question

3. A reaction of the type X → Y + Z has a rate constant k = 3.6 x 10-5 M/s. Determine

molarity of x after a reaction time of 30.0 min if the initial concentration of x is
0.096M
(3 marks)​

Answer 1

0.16 M.

Step-by-step explanation:

Hello!

In this case, since the reaction can be determined as zeroth-order because of the units of M/s, we can write the rate law as:

`[X]=[X]_0-kt`

In such a way, since we need the initial concentration of X, we proceed as follows:

`[X]_0=[X]+kt`

So we plug in to obtain:

`[X]_0=0.096M+3.6x10^(-5)(M)/(s)*30.min*(60s)/(1min)`

`[X]_0=0.16M`

Best regards!