A compound dissociates into its elements at 625 K in a first order process with a...

Question

Question

A compound dissociates into its elements at 625 K in a first order process with a rate constant of 0.063s^-1.

If you start with a 0.26 M concentration of the compound at this temperature, what will the concentration be after 2.285s?

(Assume that the compound is not reformed once it dissociates.)

I am not sure how to solve it :(((( Please help me.

Answer 1

Answer #1

use:
[R]=[Ro]*e^(-k*t)
=0.26 * e^ (-0.063*2.285)
=0.225 M

Ans: 0.225 M

Answer 2

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