Question

*If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be*

1). Doubled
2). Halved
3). Tripled
4). Unchanged

Answer 1

Answer: 4). Unchanged

Explanation:. Kf (molal depression constant ) is a characteristic hot solvent and is is independent of molality.

Answer 2

Answer:

Concept:

Molality refers to the amount of solute in a solution that is comparable to 1 kilogramme or 1000 g of solvent. Molality is derived from molarity, that refers to the molar concentration of a solution. Although one kilogramme of fluid (solvent) occupies the volume of one litre at room temp, and a tiny amount of solute has minimal effect on the volume, the molality and molarity of a watered down aqueous solution are now almost identical, despite this same fact that the two terms are sometimes misunderstood.

Given:

The value of the molal depression constant (Kf) will be doubled if the molality of the dilute solution is doubled.

1). Doubled

2). Halved

3). Tripled

4). Unchanged

Find:

find the correct option for the given question

Answer:

The correct option is [4] unchanged

• The value of the molal depressed constant, Kf, remains constant when the receiving of a dilute solution is doubled.
• The molal depression constant (Kf) is one of the solvent's properties. That has nothing to do with amount of solute present.
• Kf (molar mass depressed constant) is a solvent property that is unaffected by molality.
• When the molarity of a dilute solution is doubled, the value of the molal depression constant, K f, is constant for a particular solvent.

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