Question

Which of the following are true for an acid-base titration?

• A. Indicators catalyst the acid-base reactions by relasing or accepting $H ^{\oplus}$ ions
• B. Indicators do not significantly affect the pH of the solution to which they are added
• C. Acid-base reactions do not occur in the absence of indicators
• D. Indicators have different colours in dissociated and undissociated forms

Answer 1

Answer: (B), (D)

a. Wrong statement
b. Correct: Indicator are weak acid or base and are added is small amount. So they do not affect the $pH$ of the solution
c. Wrong: They occur even in the absence of indicators
d. Correct: Factual statement