A reaction gas mixture contains $50 \%, 30 \%$, $20 \%$ of $A, B$ and $C$ by volume, respectively. The…

A reaction gas mixture contains $50 \%, 30 \%$, $20 \%$ of $A, B$ and $C$ by volume, respectively. The mixture undergoes the following reactions.
$P_1$ and $P_2$ are two products of the reactions. Choose the correct answer if the reaction completes.
  1. C will be completely exhausted.
  2. A will be completely exhausted.
  3. $B$ will not be completely exhausted.
  4. $P_1$ will be completely exhausted.

Solution

In the first reaction $I$ mole of $A$ reacts with 2 moles of $B$ to form product $P_1$. Hence, $B$ is the limiting reagent here, which will give 1 mole of $P_1$. Now, in 2nd reaction 1 mole of $P_1$ will require 0.75 mole of $C$. Then, 4 moles of $P_1$ will require $4 \times 0.75=3$ moles of $C$. Hence, $C$ will be completely exhausted.

Asked in: AP EAMCET 2022 (07 Jul Shift 1)

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