Question

The first order reaction A → B, has k = 2.10. If the initial concentration of reactant A is 1.500 M, how long will it take [A] = 0.600 M?

Answer 1

Answer:

$ln( \binom{at}{ao}{} ) = - kt$

Explanation:

$ln( \binom{0.6}{1.5} ) = - 2.1t$

$ln(0.4) = - 2.1t$

T = 0.436.

I used the formula for first order reaction.

I hope you get this.