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Statement I : A reactant that is entirely consumed when a reaction goes to completion is known as limiting reactant.

Statement II : The amount of limiting reactant limts the amount of product formed.

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Statement I and II are correct and II explains I

Statement I and II are correct and II does not explain I

Statement I is correct and statement II is incorrect

Statement I is incorrect and statement II is correct

answer is B.

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Detailed Solution

The reactant which is completely consumed during the reaction is a limiting reagent

Ex :- 2Mg + O₂ → 2MgO

Suppose '48g' each of Mg and O₂ are taken

\large \mathop {\mathop {2Mg}\limits_{(2 \times 24g)} }\limits_{48g} + \mathop {\mathop {{O_2}}\limits_{32g} }\limits_{\small{\left. {\begin{array}{*{20}{c}} {32g} \\ {48g} \end{array}} \right\}16g\;excess}} \to \mathop {\mathop {2MgO}\limits_{2 \times 40g} }\limits_{(2 \times 40g)} \

48g of Mg require only 32g of O₂ but 48g of O₂ is taken.

Mg is the limiting reagent and O₂ the excess reagent. The amount of MgO formed depends on the amount of the reactant which completely reacted. (amount of limiting reactant).

Statement I and Statement II are true

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