- A sample of 32P initially shows -activity
of one Curie. After 303 days the activity
falls to 1.5 x 104 dps. What is the half life
of 32P ?
(Ans.14.27 d)
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The half life of P-32 is 6.3 days
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant = 1 Curie =
a - x = amount left after decay process =
For completion of half life:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
Learn more about first order kinetics
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