Chemistry
Grade-10
Easy
Question
Which is true about acid-base indicators?
- They are commonly used in acid-base titrations.
- The color change is due to a change in hydrogen or hydroxide ion concentrations.
- Acid-base indicators are substances whose solution changes color due to changes in the pH.
- All of the above
Hint:
An acid-base indicator is a weak acid or weak base that dissociates in water to yield the weak acid and its conjugate base or else the weak base and its conjugate acid.
The correct answer is: All of the above
- An acid-base indicator is a weak acid or weak base that dissociates in water to yield the weak acid and its conjugate base or else the weak base and its conjugate acid.
- They are commonly used in acid-base titrations.
- The color change is due to a change in hydrogen or hydroxide ion concentrations.
- Acid-base indicators are substances whose solution changes color due to changes in the pH.
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