AIPMT PRELIMS2010Chemistry-Chemical Kinetics
AIPMT PRELIMS 2010 Chemistry Rate of Reaction MCQ Question
Type: MCQ-numerical-Medium-Class 12
For the reaction N₂O₅(g) → 2NO₂(g) + 1/2 Ω₂(g) the value of rate of disappearance of N₂O₅ is given as 6.25 × 10⁻³ mol L⁻¹s⁻¹. The rate of formation of NO₂ and O₂ is given respectively as:
A
1.25 × 10⁻² mol L⁻¹s⁻¹ and 6.25 × 10⁻³ mol L⁻¹s⁻¹
B
6.25 × 10⁻³ mol L⁻¹s⁻¹ and 6.25 × 10⁻³ mol L⁻¹s⁻¹
C
1.25 × 10⁻² mol L⁻¹s⁻¹ and 3.125 × 10⁻³ mol L⁻¹s⁻¹
D
6.25 × 10⁻³ mol L⁻¹s⁻¹ and 3.125 × 10⁻³ mol L⁻¹s⁻¹
Correct Answer
Option C
Detailed Explanation
The rate of formation of NO₂ is twice the rate of disappearance of N₂O₅, and the rate of formation of O₂ is half the rate of disappearance of N₂O₅. Thus, the rates are 1.25 × 10⁻² mol L⁻¹s⁻¹ for NO₂ and 3.125 × 10⁻³ mol L⁻¹s⁻¹ for O₂.
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