Question

Titrations are highly controlled chemical reactions that are used to study unknown solutions. Which of the following statements about titrations

are true?
Select one or more:
- The endpoint of a titration can be visually determined if the proper indicator is used.
- The solutions involved need to have different colors to perform a titration.
- Titrations can be used to determine the concentration of an unknown solution if you are titrating with a solution of known concentration.
- Titrations always require that the volume of the titrant equals the volume of the solution being studied.
- Titrations are an effective way to determine the molar mass of an unknown chemical.

Answer 1

True statements regarding titrations include the endpoint being visually determinable with an indicator, the determination of unknown solution concentration using a known concentration titrant, and the capability to determine molar mass. The solution colors and equal volumes are not necessarily true aspects of titrations.

Step-by-step explanation:

Titrations are highly controlled chemical reactions used in analytical chemistry, often for the purpose of determining the concentration of a substance in a solution. In the context of the given statements, the following are true:

• The endpoint of a titration can be visually determined if the proper indicator is used.
• Titrations can be used to determine the concentration of an unknown solution if you are titrating with a solution of known concentration.
• Titrations are an effective way to determine the molar mass of an unknown chemical.

The solutions involved in a titration do not need to have different colors, and it is not necessary that the volume of the titrant equals the volume of the solution being studied; these are common misconceptions. The use of indicators, such as phenolphthalein, which change color at the titration's endpoint, and precise calibrated instruments like burettes are key in achieving accurate results.