NEET2012ChemistryChemical KineticsActual
For a reaction, r=k ( CH ₃ COCH ₃ )^ 3 / 2 then unit of rate of reaction and rate constant respectively is
Options
- Amol L ⁻¹ ~s ⁻¹, ~mol ^ -1 / 2 ~L ^ 1 / 2 ~s ⁻¹
- Bmol ⁻¹ ~L ⁻¹ ~s ⁻¹, ~mol ^ -1 / 2 ~L ^ -1 / 2 ~s ⁻¹
- Cmol L ⁻¹ ~s ⁻¹, ~mol ^ +1 / 2 ~L ^ 1 / 2 ~s ⁻¹
- Dmol L s , mol ^ +1 / 2 ~L ^ 1 / 2 ~s
Correct answer
A. mol L ⁻¹ ~s ⁻¹, ~mol ^ -1 / 2 ~L ^ 1 / 2 ~s ⁻¹
Step-by-step solution
aligned : Rate & = concentration time = mol L ⁻¹ ~s = & mol L ⁻¹ ~s ⁻¹ aligned aligned : Rate & = concentration time = mol L ⁻¹ ~s & = mol L ⁻¹ ~s ⁻¹ aligned The units of rate constant for the reaction of the n^ th order = ( mol L ⁻¹ )^ 1-n ~s ⁻¹ here, = 3 2 Unit of rate constant = ( mol L ⁻¹ )^ 1-3 / 2 ~s ⁻¹= ( mol L ⁻¹ )^ -1 / 2 ~s ⁻¹= mol ^ -1 / 2 ~L ^ 1 / 2 ~s ⁻¹