MHT CET202415 May 2024Evening ShiftChemistryChemical KineticsActual
For reaction A + B product, rate of reaction is 3.6 10⁻² sec ⁻¹ . When [A^ ]=0.2 moldm ⁻³ and [B]=0.1 moldm ⁻³ , calculate rate constant of reaction if reaction is first order in A and second order is B ?
Options
- A3.6 ~mol ⁻² dm ^6 sec ⁻¹
- B1.8 ~mol ⁻² dm ⁻⁶ sec ⁻¹
- C18 ~mol ⁻² dm ^6 sec ⁻¹
- D36 ~mol ⁻² dm ⁻⁶ sec ⁻¹
Correct answer
C. 18 ~mol ⁻² dm ^6 sec ⁻¹
Step-by-step solution
aligned & Rate = k [ A ][ B ]^2 & k = Rate [ A ][ B ]^2 = 3.6 10⁻² ~mol dm ⁻³ sec ⁻¹ (0.2 ~mol dm ⁻³ ) (0.1 ~mol dm ⁻³ )^2 = & 18 10⁻³ ~mol ⁻² dm ^6 sec ⁻¹ aligned