A indicator is a weak organic acid or a base which has shows different colors in acidic and basic mediums. The color change occurs when the weak acidic or basic indicator dissociates to give its respective conjugate base or conjugate acid.
Therefore the correct option would be Indicators are weak acids or bases.
The value of the given equation i.e. (4.123 × 0.12) + 24.2 is 24.7.
Given that,
- The equation is (4.123 × 0.12) + 24.2.
According to the BODMAS rule, first, we have to multiply 4.123 with 0.12 after that add the 24.2 to the value that comes.
So,
= (4.123 × 0.12) + 24.2
= 0.49476 + 24.2
= 24.69
= 24.70
Therefore we can conclude that the value of the given equation i.e. (4.123 × 0.12) + 24.2 is 24.7.
Learn more: brainly.com/question/24169758
