Equilibrium Question 890
Question: Select the best indicator from the given table for titration of 20 mL of
Indicator pH Range (I) Bromothy mol blue 6.0-7.6 (II) Thymolphthalein 9.3-11.05 (III) Malachite green 11.4-13 (IV) M-Cresol purple 7.4-9.0
Options:
A) I
B) II
C) III
D) IV
Show Answer
Answer:
Correct Answer: D
Solution:
At equivalent point
where
For best indicator pH at equivalent point should be between colour transition range of indicator.
