MHT CET202416 May 2024Morning ShiftChemistryChemical KineticsActual
Rate of reaction, A + B product, is 7.2 10⁻² moldm ⁻³ ~s ⁻¹ at [ A ]=0.4 ~mol dm ⁻³ and [B]=0.1 ~mol dm ⁻³ . The reaction is first order in A and second order in B. Calculate rate constant.
Options
- A14 ~mol ⁻² dm ^6 ~s ⁻¹
- B12 ~mol ⁻² dm ^6 ~s ⁻¹
- C18 ~mol ⁻² dm ^6 ~s ⁻¹
- D20 ~mol ⁻² dm ^6 ~s ⁻¹
Correct answer
C. 18 ~mol ⁻² dm ^6 ~s ⁻¹
Step-by-step solution
aligned & Rate = k [ A ][ B ]^2 & aligned k & = Rate [ A ][ B ]^2 = 0.072 ~mol dm [0.4][0.1]^2 & =18 ~mol ⁻² dm ^6 ~s ⁻¹ aligned aligned