Questions: Select the definition of a titrant.
In a titration, it is the device from which the solutions are being dispensed.
In a titration, it is the solution created as the two reactants react.
In a titration, it is a reactant whose concentration is known precisely.
In a titration, it is the reactant that is slowly added to the flask from a buret.
Transcript text: Select the definition of a titrant.
In a titration, it is the device from which the solutions are being dispensed.
In a titration, it is the solution created as the two reactants react.
In a titration, it is a reactant whose concentration is known precisely.
In a titration, it is the reactant that is slowly added to the flask from a buret.
Solution
Solution Steps
Step 1: Identify the context of the term "titrant"
The term "titrant" is used in the context of a titration, which is a laboratory method of quantitative chemical analysis used to determine the concentration of an identified analyte.
Step 2: Analyze each option
Option 1: "In a titration, it is the device from which the solutions are being dispensed."
This describes the buret, not the titrant.
Option 2: "In a titration, it is the solution created as the two reactants react."
This describes the product of the reaction, not the titrant.
Option 3: "In a titration, it is a reactant whose concentration is known precisely."
This correctly describes the titrant, as it is the solution of known concentration used to determine the unknown concentration of the analyte.
Option 4: "In a titration, it is the reactant that is slowly added to the flask from a buret."
This also correctly describes the titrant, as it is the solution added from the buret to the analyte solution.
Step 3: Determine the most accurate definition
Both options 3 and 4 describe the titrant accurately. However, option 3 emphasizes the known concentration, which is a critical aspect of the titrant's role in titration.
Final Answer
\(\boxed{\text{In a titration, it is a reactant whose concentration is known precisely.}}\)