Question

What is the main limitations of using the volumetric flask?

Answer 1

Answer:

Some of the limitations of Volumetric Analysis are:

Determining End Point :

Determining the equivalence point can also be difficult in some cases because the color changes that represent the end point only occur after the amount of titrant (added solution) has exceeded the amount of the analyte (unknown solution)

Accuracy of the Measuring Instruments

The accuracy of the glassware used to measure the solutions, such as pipettes and burettes, can also act as a limitation in titration experiments. Although glassware can be calibrated, these calibrations are not always completely accurate.

Other Human Error can also pose many limitations to a titration experiment. For example, if a sample solution has been left open, a small amount of the solution may have evaporated. If the pipette was not washed with distilled water between measuring the titrate and the analyte, the analyte could be contaminated. etc.

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Answer 2

The main limitations of using volumetric flask are as follows -

• The volumetric flasks are small in size,so measuring a large volume by a volumetric flask is fairly difficult. Either a very big flask is needed or we have to measure the large volume into smaller parts.

• Most of the volumetric flasks have only one specific marking for measuring a specific volume. For example, if a volumetric flask is labelled as 250 ml then we will find only one marking on the neck of that volumetric flask which indicates the predefined 250 ml of volume. So, we can measure only one specific volume by a volumetric flask.

• With context to the previous point we can also say that the volume measurement of precise values like 253.3 ml is not possible with the volumetric flasks.