Define excess reactant.
Understand the Problem
The question is asking for the definition of the term 'excess reactant' which is commonly used in chemistry to describe a reactant that is not completely consumed in a chemical reaction.
Answer
An excess reactant is the reactant that remains after a chemical reaction has finished because it was present in greater quantity than needed to completely react.
An excess reactant is a reactant in a chemical reaction that remains after a chemical reaction has reached completion because it was present in a greater quantity than necessary to completely react with the limiting reactant.
Answer for screen readers
An excess reactant is a reactant in a chemical reaction that remains after a chemical reaction has reached completion because it was present in a greater quantity than necessary to completely react with the limiting reactant.
More Information
In chemical reactions, identifying the excess reactant helps in calculating the amounts of remaining reactants and products after the reaction.
Tips
A common mistake is confusing the excess reactant with the limiting reactant. Remember, the limiting reactant is completely consumed first, dictating the amount of product formed.
Sources
- Limiting Reactant and Excess Reactant - chem.libretexts.org
- What is an Excess Reactant? - thoughtco.com
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