Asked Feb 16, 2020

Phosphorus-32 has a half-life of 14.3 days. What is the first-order rate constant for the decay of this isotope?


Expert Answer

Step 1

Chemical kinetics is the branch of chemistry that mainly deals with the rate of reaction and change in the concentration of reactant and product molecules with time. The rate of reaction expresses by the rate law which states that the rate of reaction is directly proportional to the active concentration of reactant molecules.

Step 2

In the first order kinetic and the half-life is inversely proportional to the rate constant of the reaction. 

Chemistry homework question answer, step 2, image 1

Step 3


Half-life = 14.3 days

Calculate the rate constant:

Chemistry homework question answer, step 3, image 1


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