1. Tardigrade
  2. Question
  3. Chemistry
  4. At the end point, there is a sharp change of colour in the indicator. This happens because the

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. At the end point, there is a sharp change of colour in the indicator. This happens because the

Equilibrium

Solution:

a. Correct: At the point, $\left[ H ^{\oplus}\right]$ becomes small and to change it, small amount of $[\overset{\ominus}{ O}H ]$ is required. When $\left[ H ^{\oplus}\right]$ change from $10^{-6} M$ to $10^{-7} M , pH$ change is one, but the volume of $NaOH$ required for this change is very small. So, the curve changes sharply
b. Correct: Quinoid structure is obtained
(c) and (d) are wrong statements