NEET2010ChemistryChemical KineticsActual
For the reaction ( N ₂ O ₅( g ) 2 NO ₂( g )+(1 / 2) O ₂( g ) ) the value of rate of disappearance of ( N ₂ O ₅ ) is given as (6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹ ). The rate of formation of ( NO ₂ ) and ( O ₂ ) is given respectively as
Options
- A6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹ and 6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹
- B1.25 10⁻² ~mol ~L ⁻¹ ~s ⁻¹ and 3.125 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹
- C6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹ and 3.125 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹
- D1.25 10⁻² ~mol ~L ⁻¹ ~s ⁻¹ and 6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹
Correct answer
B. 1.25 10⁻² ~mol ~L ⁻¹ ~s ⁻¹ and 3.125 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹
Step-by-step solution
Key Idea Rate of disappearance of reactant = rate of appearance of product aligned & or - 1 stoichiometric coefficient d [reactant ] dt & of reactant & =+ 1 stoichiometric d [product ] dt & coefficient of product & aligned For the reaction, aligned & N ₂ O ₅( ~g ) 2 NO ₂( ~g )+ 1 2 O ₂( ~g ) & - d [ N ₂ O ₅ ] dt =+ 1 2 d [ NO ₂ ] dt & =+ 2 ~d [ O ₂ ] dt & d [ NO ₂ ] dt =-2 d [ N ₂ O ₅ ] dt & =2 6.25 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹ & =12.5 10⁻³ ~mol ~L ⁻¹ ~s ⁻¹ & =1.25 10⁻² ~mol ~L ⁻¹ ~s ⁻¹ & aligned aligned d [ O ₂ ] dt & =-