In the titration steps, after the indicator changes color, what is done?

• A. note the volume of acid used to neutralise the alkali
• B. add more acid to ensure completion
• C. wash the flask and dry it
• D. weigh the crystals formed

Answer: (A)

In a titration, the color change from the indicator marks the point where neutralization is complete. You stop adding the acid at that moment and record the volume used. That measured volume is what you need to calculate how much acid was required to neutralize the base (and, with the known concentration, work out the unknown concentration or amount). Adding more acid would push the solution past the endpoint and ruin the calculation. Washing the flask and drying it or weighing crystals aren’t part of determining the titration result.