Question

Statement-I : For a binary solution of two known liquids, A and B, with the knowledge of density of solution, molarity can be converted into molality, Statement 11 : Molarity changes with change in temperature.​

Answer 1

Answer:

Both statements are correct

Answer 2

Statement 1 and Statement 2 are both correct.

Explanation:

Statement 1:

• The relation between molarity and molality can be given as:
• $\frac{1}{m} = \frac{d}{M} - \frac{Mm_{s} }{1000}$
• where m is the molality of solution, M is the molarity of solution, d is the density of the solution and $Mm_{s}$ is the molar mass of solute.
• Thus, with the knowledge of the density of the solution, molarity can be converted into molality.

Statement 2:

• The molarity of a solution can be defined as the total number of moles of solute present in 1 litre of solution.

• $M = \frac{n}{V}$

• When the temperature of a solution is raised, the solution expands resulting in an increase in volume.
• As the volume increases, the molarity of the solution decreases.
• In other words, molarity is inversely proportional to the temperature.