A chemical reaction that is first-order in X is observed to have a rate constant of 1.50 × 10–2 s–1. If the initial concentration of X is 1.0 M, what is the concentration of X after 196 s?

0.053 M is the concentration of X after 196 seconds.

Explanation:

Initial concentration of the X =

Time taken by the sample, t = 196 s

Final concentration of the X after t = [A] =?

Rate constant of the reaction = k =

Formula used :

where,

Now put all the given values in this formula, we get

0.053 M is the concentration of X after 196 seconds.

the answer is c

tell me if wrong