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Question: Answered & Verified by Expert
Instantaneous rate of a reaction is $-\frac{1}{2} \frac{\mathrm{d}[\mathrm{x}]}{\mathrm{dt}}=-\frac{\mathrm{d}[\mathrm{y}]}{\mathrm{dt}}=\frac{1}{2} \frac{\mathrm{d}[\mathrm{z}]}{\mathrm{dt}}$, identify the reaction.
ChemistryChemical KineticsMHT CETMHT CET 2021 (20 Sep Shift 2)
Options:
  • A $\mathrm{x}-2 \mathrm{y} \longrightarrow 2 \mathrm{z}$
  • B $2 \mathrm{x}+\mathrm{y} \longrightarrow 2 \mathrm{z}$
  • C $2 \mathrm{z}+\mathrm{y} \longrightarrow 2 \mathrm{x}$
  • D $2 \mathrm{x}-2 \mathrm{y} \longrightarrow \mathrm{z}$
Solution:
2739 Upvotes Verified Answer
The correct answer is: $2 \mathrm{x}+\mathrm{y} \longrightarrow 2 \mathrm{z}$
$$
-\frac{1}{2} \frac{\mathrm{d}[\mathrm{x}]}{\mathrm{dt}}=-\frac{\mathrm{d}[\mathrm{y}]}{\mathrm{dt}}=\frac{1}{2} \frac{\mathrm{d}[\mathrm{z}]}{\mathrm{dt}}
$$
Correct reaction: $2 \mathrm{x}+\mathrm{y} \longrightarrow 2 \mathrm{z}$
(-) sign represents the rate of reactants.

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