Question

III. Statement type questions:
Statement (A): Molarity is dependent on temperature.
Statement (B): Molarity increases with decreasing in temperature,
Statement (C): Normality is independent on temperature.
a) All the above statements are correct
b) All the above statements are incorre
c) A. B are correct but C is incorrect
d) A. B are incorrect and C is correct.​

Answer 1

Answer:

C) A and b are correct whereas c is incorrect

Answer 2

Answer:

We have Normailty = molarity× n-factor

for HCl, we have n-factor = 1

so, normality = molarity

Molarity is dependent on temperature due to temperature factor. However, molality is independent of temperature. Therefore, the statement (ii) is incorrect.

In acidic medium, KMnO

4

→Mn

2+

so, n-factor = 5

hence, normailty = molarity× n-factor

hence, normality of 1 M KMnO

4

= 5N