What is the molality of solution if its density is ? — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{Mass of 1 L solution} = 1040\text{ g}$. <br>$\text{Mass of solute } (NaOH) = 40\text{ g}$. <br>$\text{Mass of solvent} = 1000\text{ g} = 1\text{ kg}$. <br>$\text{Molality} = 1\text{ mol} / 1\text{ kg} = 1\text{ m}$.