MHT CET20255 May 2025Evening ShiftChemistryChemical KineticsActual
For the reaction, 2 ~N ₂ O _ 5( ~g ) 4 NO _ 2( ~g ) + O _ 2( ~g ) N ₂ O ₅ disappears at a rate of x ~mol~ dm ⁻³ ~s ⁻¹ Find the rate of formation of O ₂ ?
Options
- Ax ~mol dm ⁻³ ~s ⁻¹
- B2 x ~mol dm ⁻³ ~s ⁻¹
- Cx 2 ~mol dm ⁻³ ~s ⁻¹
- D3 x 2 ~mol dm ⁻³ ~s ⁻¹
Correct answer
C. x 2 ~mol dm ⁻³ ~s ⁻¹
Step-by-step solution
From the balanced reaction 2 N ₂ O _ 5( g ) 4 NO _ 2( g ) + O _ 2( g ) , the reaction rate is related to concentration changes by: - 1 2 d[ N ₂ O ₅] dt = + 1 4 d[ NO ₂] dt = + d[ O ₂] dt Given - d[ N ₂ O ₅] dt = x mol dm ⁻³ s ⁻¹ , the formation rate of O ₂ becomes: + d[ O ₂] dt = - 1 2 d[ N ₂ O ₅] dt = 1 2 x mol dm ⁻³ s ⁻¹ Answer: C