Question

The molarity of pure water at $4^{\circ }C$ is

• A. 1 M
• B. 2.5 M
• C. 5 M
• D. 55.5 M

Answer 1

The correct option is D

55.5 M

The density of water is $1gc{m}^{-1}$ at $4^{\circ }C$

So, molarity= $\frac{1000}{18}$=55.5M.