Question

30. The suitable pH for titration by Mohr's method is .....
a) pH< 2 b) pH= 3.65 c) pH=6.59.
d) pH> 10
thod2​

Answer 1

Answer:

pH=6.59

Explanation:

The Mohr titration should be carried out under conditions of pH 6.5 – 9. At higher pH silver ions may be removed by precipitation with hydroxide ions, and at low pH chromate ions may be removed by an acid-base reaction to form hydrogen chromate ions or dichromate ions, affecting the accuracy of the end point.

Answer 2

Answer:

c

Explanation:

The Mohr titration should be carried out under conditions of pH 6.5 – 9. ... The Mohr titration is sensitive to the presence of both chloride and bromide ions in solution and will not be too accurate when there is a significant concentration of bromide present as well as the chloride.