Question

The rate constant for first order reaction is 4.93x10-4 s

-1

. Calculate its half life period.​

Answer 1

Answer:

the answer is given below in image

Answer 2

The reaction's half-life is 140 seconds long.

The following equation provides the first-order reaction's half-life period:

$t1/2 = 0.693 / k$

where k is the rate constant and t1/2 is the half-life period.

Using the 4.93 x 10-4 s-1 rate constant as a plug-in, we obtain:

$t1/2 = 0.693 / (4.93 * 10-4) = 140 s$

Therefore, the reaction's half-life is 140 seconds.

• It is a characteristic quality of a reaction and is unaffected by the reactant's initial concentration. The concept of half-life is crucial in fields like radioactivity and pharmacology because it can be used to calculate how quickly a substance degrades over time.
• The equation t1/2 = 0.693 / k, where k is the rate constant, gives the half-life period in a first-order reaction, which can be calculated using the rate constant.

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