JEE Main2010ChemistryChemical KineticsActual
The time for half life period of a certain reaction A products is 1 hour. When the initial concentration of the reactant ' A ', is 2.0 ~mol ~L ⁻¹ , how much time does it take for its concentration to come from 0.50 to 0.25 ~mol ~L ⁻¹ if it is a zero order reaction?
Options
- A4 ~h
- B0.5 ~h
- C0.25 ~h
- D1 ~h
Correct answer
C. 0.25 ~h
Step-by-step solution
For a zero order reaction k= x t Where x= amount decomposed k = zero order rate constant for a zero order reaction k= [ A ]₀ 2 t _ 1 2 Since [A₀ ]=2 M, t_ 1 / 2 =1 hr ; k =1 from equation (1) t = 0.25 1 =0.25 hr