Rate Of Reaction
For the reaction 2A + B → 3C, if the rate of disappearance of A is 0.6 mol L⁻¹ s⁻¹, the rate of formation of C is:
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About This Question
- Subject
- chemistry
- Chapter
- chemical kinetics
- Topic
- rate of reaction
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
0.9 mol L⁻¹ s⁻¹
For a general reaction aA+bB→cC, the average rate is: Rate=−a1ΔtΔ[A]=−b1ΔtΔ[B]=+c1ΔtΔ[C] Given the reaction 2A+B→3C:
- Rate of disappearance of A =−dtd[A]=0.6 mol L−1 s−1
- Relationship: Rate=21(−dtd[A])=31(dtd[C]) 21(0.6)=31(dtd[C]) 0.3=31(dtd[C])⟹dtd[C]=0.9 mol L−1 s−1
This medium difficulty chemistry question is from the chapter chemical kinetics, covering the topic of rate of reaction. It appeared in the 2025 exam.
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