MHT CET20249 May 2024Morning ShiftChemistryChemical KineticsActual
Consider the reaction 3 I ⁻+ S ₂ O ₈²⁻ I ₃⁻+2 SO ₄²⁻ , at a particular time t , d [ SO ₄²⁻ ] dt is 2.2 10⁻² ~mol dm ⁻³ ~s ⁻¹ . What is the value of d [ S ₂ O ₈²⁻ ] dt ?
Options
- A1.1 10⁻² ~mol dm ⁻³ ~s ⁻¹ .
- B2.2 10⁻² ~mol dm ⁻³ ~s ⁻¹
- C3.3 10⁻² ~mol dm ⁻³ ~s ⁻¹
- D6.6 10⁻² ~mol dm ⁻³ ~s ⁻¹
Correct answer
A. 1.1 10⁻² ~mol dm ⁻³ ~s ⁻¹ .
Step-by-step solution
3 I ⁻+ S ₂ O ₈²⁻ I ₃⁻+2 SO ₄²⁻ Rate of reaction =- 1 3 ~d [ I ⁻ ] dt =- d [ ~S ₂ O ₈²⁻ ] dt = d [ I ₃⁻ ] dt = 1 2 ~d [ SO ₄²⁻ ] dt Hence, d [ S ₂ O ₈²⁻ ] dt = 1 2 ~d [ SO ₄²⁻ ] dt = 1 2 2.2 10⁻²=1.1 10⁻² ~mol dm ⁻³ ~s ⁻¹