The molality of a 10% (w/w) aqueous solution of NaOH is: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Mole Concept and Some Basic Concepts of ChemistryeasyMCQ SINGLE

Question

The molality of a 10% (w/w) aqueous solution of NaOH is:

Answer: B

💡 Solution & Explanation

10g NaOH in 90g water. $\text{Moles} = 10/40 = 0.25$. $\text{Molality} = 0.25 / 0.09 = 2.77 \text{ m}$. [5]

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