Chemistry-Raoult's Law
NEET Chemistry Raoult's Law MCQ Question
Type: MCQ-numerical-Medium-Class 12
A solution is made by dissolving 58.5 g of NaCl in 500 g of water. What is the molality of the solution? (Molar mass of NaCl = 58.5 g/mol)
A
2 mol/kg
B
1 mol/kg
C
0.5 mol/kg
D
0.1 mol/kg
Correct Answer
Option B
Detailed Explanation
Molality is calculated as the number of moles of solute per kilogram of solvent. Here, 58.5 g of NaCl is 1 mole, and the solvent, water, weighs 0.5 kg, giving a molality of 1 mol/kg.
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