MHT CET202310 May 2023Morning ShiftChemistryChemical KineticsActual
For 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 [ I ⁻ ] dt ?
Options
- A1.1 10⁻² ~mol dm ⁻³ ~s ⁻¹
- B3.3 10⁻² ~mol dm ⁻³ ~s ⁻¹
- C4.4 10⁻² ~mol dm ⁻³ ~s ⁻¹
- D6.6 10⁻² ~mol dm ⁻³ ~s ⁻¹
Correct answer
B. 3.3 10⁻² ~mol dm ⁻³ ~s ⁻¹
Step-by-step solution
aligned & 3 I ⁻+ S ₂ O ₈²⁻ I ₃⁻+2 SO ₄²⁻ & Rate of reaction =- 1 3 d [ I ⁻ ] dt =+ 1 2 d [ SO ₄²⁻ ] dt & aligned - d [ I ⁻ ] dt & = 3 2 d [ SO ₄²⁻ ] dt = 3 2 2.2 10⁻² & =3.3 10⁻² ~mol dm ⁻³ ~s ⁻¹ aligned aligned [Note: In the question, d [ I ⁻ ] dt is changed to - d [ I ⁻ ] dt to apply appropriate textual concepts.]