KCET2018ChemistryChemical Kinetics
For the reaction, ( 2 SO ₂+ O ₂ 2 SO ₃ ), the rate of disappearance of ( O ₂ ) is ( 2 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ ). The rate of apperance of ( SO ₃ ) is
Options
- A( 2 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ )
- B( 4 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ )
- C( 1 10⁻¹ ~mol ~L ⁻¹ ~s ⁻¹ )
- D( 6 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ )
Correct answer
B. ( 4 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ )
Step-by-step solution
For the reaction, 2 SO ₂+ O ₂ 2 SO ₃ Rate =- 1 2 d [ SO ₂ ] d t =- d [ O ₂ ] d t =+ 1 2 d [ SO ₃ ] d t Given - d [ O ₂ ] d t =2 10⁻⁴ ~mol ~L ⁻¹ ~S ⁻¹ To find + d [ SO ₃ ] d t =?+ 1 2 d [ SO ₃ ] d t =- d [ O ₂ ] d t d [ SO ₃ ] d t =2 2 10⁻⁴ ~mol ~L ⁻¹ ~S ⁻¹=4 10⁻⁴ ~mol ~L ⁻¹ ~S ⁻¹