For a chemical reaction , the rate of disappearance of is . What is the rate of formation of ?

Answer and explanation

Correct answer: B.

  1. Step 1: Relate the rates through reaction stoichiometry: .
  2. Step 2: Substitute the rate of disappearance of : .
  3. Step 3: Calculate the rate of appearance of : .
Answer
.
Why not the others: inverts the stoichiometric ratio to ; multiplies by without dividing by ; divides by instead of multiplying.

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For a chemical reaction 2A + B… | JEE Main Chemical kinetics