A base is added to an acid during a titration. A pH meter is used to monitor the reaction’s progress. When should the addition o
f base stop? when adding a few drops of base causes a large decrease in pH when adding a few drops of base causes a large increase in pH when adding a few milliliters of base causes a large increase in pH when adding a few milliliters of base causes a large decrease in pH
Answer: The correct answer is'when adding a few drops of base causes a large increase in pH'.
Explanation:
When an acid reacts with base neutralization reaction occurs which means that H^+ ions from the acid and OH^- ion from the base combine together to form neutral molecule of water.
If the concentration of is slightly higher than the concentration then the pH of the solution will become lower than 7.
If the concentration of is slightly higher than the concentration then the pH of the solution will become higher than 7.
If concentration of both and are equal then the pH of the solution will be 7. That is neutral pH.
During the titration , while adding base to an acid. Addition of base must be stopped when large increase in value of pH of an acid is observed on a pH meter.