MHT CET202311 May 2023Morning ShiftChemistryChemical KineticsActual
What is half life time of a first order reaction if initial conc. of reactant is 0.01 ~mol ~L ⁻¹ and rate of reaction is 0.00352 ~mol ~L ⁻¹ minute ⁻¹ ?
Options
- A1.969 minute
- B7.75 minute
- C16.69 minute
- D19.69 minute
Correct answer
A. 1.969 minute
Step-by-step solution
For a first order reaction, rate = k [ A ] aligned & array l 0.00352 ~mol ~L ⁻¹ minute k =0.352 minute ⁻¹ array & aligned Half-life period, ( t _ 1 / 2 )= 0.693 k & = 0.693 0.352 & =1.969 minute aligned aligned