Question

The rate constant of a first order reaction is $6.9 x 10^{-3} s^{-1}$. How much time will it take to reduce the initial concentration to its $1/8^{th}$ value?
(a) 100 s
(b) 200 s
(c) 300 s
(d) 400 s

Answer 1

Hello mate

I think option b is Correct

Answer 2

$\huge\bold{He¥\: Mate}$

$\textbf{\underline{HERE IS YOUR ANSWER}}}$

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$<b>$
➡️Correct Option -: B✔️✔️

➡️
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❤️Thank you❤️

@☣️RithWik☣️