Question

explain half life period of first order reaction is independent of initial concentration of reactant

Answer 1

Explanation:

Half life period t1/2 of a reaction is defined as the time required to reduce the concentration of reactant to one half of its initial value.

k1 = 2.303/t ×log (a/a-x)

if amount reacted x = a/2 then t = t 1/1

therefore t1/2 = 2.303/t × log ( a / a-a/2)

t1/2 = 2.303 ×log (2.0)/k1

t1/2 = 0.693 /k1 sec.

Thus half life period of first order reaction is independent of initial concentration of reactant ..

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