After repeating the titration with the noted acid volume and the same alkali volume but without the indicator, what is the next step?

• A. evaporate most of the solution using a water bath
• B. add more alkali until color is persistent
• C. filter the solution to isolate solid
• D. cool the solution and observe crystals

Answer: (A)

When you repeat the neutralization without an indicator, you can’t judge the endpoint by color, so the next step is to recover the salt by removing water and concentrating the solution. Gently heating in a water bath to evaporate most of the solvent makes the solution saturated, which then promotes crystallization as it cools. After crystals form, you would typically filter and dry them, but the immediate next step is the careful evaporation to drive crystallization.