Question

50 points....

relational formula between molarity and molality​

Answer 1

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➡️What Is Molarity?

Molarity is the concentration of a solution. It is also known as molar concentration. Molarity is the number of moles of solute per liter of solution. It is denoted by the symbol M. The formula is given below:

Molarity=moles of solute/ liters of solution

➡️What Is Molality?

Molality can be defined as the number of moles of solute in one kilogram of solvent. It is denoted by the symbol m. The formula is given below:

Molarity=moles of solute/kilograms of solvent

➡️Relation Between Molarity And Molality:

Let the mass of given solute be W.

Let the volume of the solution be V.

Let the molality be m.

Let the molar mass of solute be M’.

Let the Molarity be M.

Let the weight of the solvent be W’.

Therefore the Molarity, M = WM′∗1000V ………(1)

Therefore the molality, m = WM′∗1000W′ …….(2)

Density, d = MV

= W+W′V

From (1)

V = W∗1000MM′ …………. (3)

From (2)

W’ = W∗1000mM′

Therefore,

W+W’ = W+W∗1000mM′ 1000M′

Answer 2

$\huge\underline\mathfrak{Solution}$

Let the mass of given solute be W.

Let the volume be V.

Let the molality be m.

Let the molar mass of solute be M’.

Let the Molarity be M.

Let the weight of the solvent be W’.

Therefore the Molarity, M = WM′∗1000/V ………(1)

Therefore the molality, m = W/M′∗1000/W′ …….(2)

Density, d = MV

= W+W′/V

Thank you! ❤