MDCAT Chemistry MCQ #2788

A solution is prepared by dissolving 12 g of urea (molar mass = 60 g/mol) in 1000 g of water. What is the molality of the solution?

MDCAT Chemistry MCQ #2788

  1. Question 1

    Q1. A solution is prepared by dissolving 12 g of urea (molar mass = 60 g/mol) in 1000 g of water. What is the molality of the solution?

    • A) 0.2 m
    • B) 0.4 m
    • C) 0.6 m
    • D) 0.8 m

    Answer: 0.2 m

    Explanation: Molality = moles of solute / kg of solvent. 12/60 = 0.2 mol in 1 kg. Option D ignores kg of solvent.