Question

What is an excess reactant?

Answer 1

HELLO !

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 that remain after a chemical reaction has reached equilibrium.

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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.