Question

List the advantages and disadvantages of a potentiometric titration relative to a titration with chemical indicators.

A) Faster reaction rates.
B) Greater precision.
C) No need for calibrated instruments.
D) Dependence on visual color change.
Please select the correct option(s)

Answer 1

Potentiometric titration has advantages such as faster reaction rates, greater precision, and no need for calibrated instruments. However, it relies on a visual color change to determine the end point, which can introduce subjectivity and potential for error.

Step-by-step explanation:

A potentiometric titration has several advantages over a titration with chemical indicators:

1. Faster reaction rates: Potentiometric titrations can often be completed more quickly than titrations using indicators. This is because the change in potential can be measured much more rapidly than a visual color change.
2. Greater precision: Potentiometric titrations can provide more precise results due to the ability to measure the change in potential with high accuracy. This can be especially beneficial when working with small sample sizes or when performing complex titrations.
3. No need for calibrated instruments: Unlike titrations with indicators, potentiometric titrations do not require the use of calibrated instruments such as burets. This can simplify the setup and reduce the potential for error.
4. Dependence on visual color change: One disadvantage of potentiometric titrations is their reliance on a visual color change to determine the end point. This can introduce some subjectivity and potential for error, especially if the color change is not distinct or easy to determine.