A solution containing kg of a solute dissolved in kg of water boils at 373.535 K. The molar mass of the solute is mol⁻¹. [nearest integer]. (Given: , boiling point of water = 373.15 K)

Question

A solution containing  kg of a solute dissolved in  kg of water boils at 373.535 K. The molar mass of the solute is  mol⁻¹. [nearest integer]. (Given: , boiling point of water = 373.15 K)

Canvas Classes · Accepted Answer

Strategy:
 Relate the boiling point elevation to the mass of the solute using the molecular weight as the unknown variable.

Step 1: Calculate elevation in boiling point ()

Step 2: Calculate the required molality ()

Step 3: Solve for molar mass ()
- Mass of solvent .
- Mass of solute .

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