Question

Answer the question with explanation. I will mark as brainliest. ​

Answer 1

Hello !

Given,

Half Life time of a reaction $t_{\frac{1}{2}}$ = 15.

We have,

For a First order Reaction, The time taken for 99.9% of Reaction completion is 10 times of Half life time of the same reaction.

It is given as follows :

$t_{99.9} = 10 \times t_{\frac{1}{2}}$

Substitute Value

$t_{99.9} = 10 \times 15 sec$

$t_{99.9} = 150\: sec$

The answer is 150 seconds, Which is in option 2.

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