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Statement-I : A reactant that is entirel...

Statement-I : `A` reactant that is entirely consumed when a reaction goes to completion is known as limiting reactant.
Because
Statement-II : The amount of reactant limits the amount of product formed.

A

Statement-I is true, Statement-II is true , Statement-II is correct explanation for Statement-I

B

Statement-I is true, Statement-II is true , Statement-II is `NOT` a correct explanation for statement-I

C

Statement-I is true, Statement-II is false

D

Statement-I is false, Statement-II is true

Text Solution

Verified by Experts

The correct Answer is:
A
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Statement-1 : In the combustion of ethane, limiting reactant is ethane Statement-2 : Oxygen in air is always present in excess.

Many a time the reaction are carried out when the reactants are not present in the amounts required by a balanced chemical reaction. In such situations, one reactant is in excess over other. The reactant which is present in th lesser amount gets conserved after sometime and after that no further reaction takes place whatever be the amount of other reactant is present .Hence, the reactant which gets consumed , limits the amount of products formed and is therefore called limiting reagent. To determine the limiting reagent find the value of phi which is the ratio of (given) mole of a substance to the stoichiometric coefficient of that substance . The limiting reagent is the reagent which has minimum value of phi . The insecticide DDT is made by the reaction CClCHO("Chloral")+2C_(6)H_(5)Cl (chlorobenzene) rarr (ClC_(6)H_(4))_(2) CHCCl_(3)(DDT)+H_(2)O If 100 pound (lb) of chlorobenzene , how much DDT would be formed? (Assume the reaction goes to completion without side reactions or losses) [1 lb =453.6 g]