Relative molecular masses in solution questions | form five Chemistry

(4402) Question Category: Short answers

  1. Boiling point of a solvent is elevated by addition of a non-volatile solute. Briefly explain.
  2. Arrange the following aqueous solutions in order of increasing freezing point: 0.01 M C_{2}H_{5}OH; 0.01 M Ba_{3}(PO_{4})_{2}; 0.01 M Na_{2}SO_{4}; 0.01 M KCl ; 0.01 M Li_{3}PO_{4}. Provide clear reason(s) for the arrangement.

Answer / Solution

UNSOLVED

(4403) Question Category: Mathematical Calculation

You are provided with the following information.

Entry Value

Molar boiling point constant for benzene, K_{b}

Molar freezing point constant for benzene, K_{f}

Boiling point of benzene

Freezing point of benzene

2.53°C kg mol-1

5.12°C kg mol-1

80.1°C

5.5°C

Calculate the boling point and freezing point of a solution made by dissolving 2.40g of biphenyl,biphenyl in 75.0 g of benzene, benzeen. Show your work clearly including manipulationsof units.

Answer / Solution

UNSOLVED

(4404) Question Category: Mathematical Calculation

An aqueous solution of urea, CO(NH_{2})_{2} at a concentration of 1.754 g dm-3 is isotonic at the same temperature with an aqueous solution of sugar at a concentration of 10.00 g dm-3 . Calculate the relative molecular mass of sugar.

Answer / Solution

UNSOLVED

(6161) Question Category: Short answers

Differentiate between cryoscopic constant and ebullioscopic constant.

Answer / Solution

UNSOLVED

(6162) Question Category: Mathematical Calculation

Derive an expression relating the van`t Hoff factor (​i) and the degree of dissociation (α).

Answer / Solution

UNSOLVED

View All Topics
News & Updates | Recently
Recent Updates
questions

2024-05-02: questions

Questions Uploaded on 2024-05-02
questions

2024-03-29: questions

Questions Uploaded on 2024-03-29
questions

2024-03-19: questions

Questions Uploaded on 2024-03-19

Dismissible in 10 seconds