Question

Assertion: For the reaction: A + 2B  3C, when 2 mol A reacts with 3 mol B, the amount of C formed is always 3 moles.

Reason: For the given data, B is the limiting reactant.​

Answer 1

Explanation:

It is correct reason for the assertion

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Answer 2

For the reaction: $\[A + 2B \to 3C\]$, when 2 mol A reacts with 3 mol B, the amount of C formed is always 3 moles because B is the limiting reagent. Thus, both assertion and reason are correct and the reason is the correct explanation of assertion.

Explanation:

• A limiting reactant is a substance that is completely consumed in a chemical reaction.
• In the given reaction, $\[A + 2B \to 3C\]$, 1 mol of A combines with 2 mol of B to form 3 mol of C.
• It means the amount of B combining with A is twice that of A.  
• Therefore, 3 mol of B will combine with 1.5 mol of A to form 3 mol of C.
• 0.5 mol of A will be left unconsumed.
• Thus, B is the limiting reactant as it is completely consumed in the reaction.
• Hence, both assertion and reason are correct and the reason is the correct explanation of assertion.