Question

define - limiting and excess reactants ​

Answer 1

The excess reactant is the reactant in a chemical reaction with a greater amount than necessary to react completely with the limiting reactant. It is the reactant(s) that remain after a chemical reaction has reached equilibrium.

Answer 2

$\textbf{Limiting Reactant }$

$\textbf{OR}$

$\textbf{Limited Reagent }$:

The reactant which is completely consumed when a reaction goes to completion is called the limiting reagent.

$\textbf{Excess Reagent }$:

Other reactants present in quantities greater than those needed to react with the quantity of the limiting reagent present would be left untreated. It is also called excess reagent.