Why addition of distilled water does not affect the result of titration?

When you add water to the analyte, you dilute a solution of unknown molarity. This dilution ultimately does not affect the experimental results. The concentration of the analyte is still unknown.

How does distilled water not affect titration?

Any distilled water you add to this erlenmeyer will change its volume, but won’t change the amount of substance of acid inside it, neither the initial volume you added of the acid solution.

Why should distilled water be used in titration?

The reason that distilled water is boiled prior to use in preparing titration solutions is to remove dissolved CO2 which is present in all water. Carbonic acid will alter the pH of the water, making it slightly acidic.

Why doesn’t washing the sides of the flask with water during the titration cause an error in the calculation?

Because the mols of acid don’t change with the amount of solvent present. Titration relies on merely knowing the number of mols of acid.

Does adding more indicator affect titration?

The indicator itself is either a weak acid or a weak base. Adding too much indicator will force your titration to significantly include the indicator an an interfering analyte component competing with your titrant against the acid or base which you are expecting to measure.

What happens if you use too much indicator in a titration?

If a large amount of indicator is used, the indicator will effect the final pH, lowering the accuracy of the experiment.

What happens if you add too much pH indicator?

How can you make titration more accurate?

Acid Base Titration Sources of Error Improvements

1. Check the calibration of the balance.
2. Verify that the primary standard is properly dried.
3. Verify the precision of the glassware.
4. Use sufficient quantities of analyte and titrant.
5. Realize the limitations of the equipment.