Radioactive decay - 1 | Chemical Kinetics: Rate Laws
General Chemistry 2 - Radioactive decay - 1
A 2.00 g sample of the radioisotope phosphorus-32 is found to contain 0.250 g of phosphorus-32 after 42.0 days.
Calculate the half-life of this isotope.
Radioactive decay is a first-order process:
ln = - kt and t1/2 =
⇒ t1/2 = -
⇒ t1/2 = - = 14.0 days