8 gm of NaOH dissolved in water to form 500 ml of its aqueous solution. If density of the solution is 1.2 gm/ml, then find the molality of the solution.

8 gm of NaOH dissolved in water to form 500 ml of its aqueous solution

1.	8 gm of NaOH dissolved in water to form 500 ml of its aqueous solution. If density of the solution is 1.2 gm/ml, then find the molality of the solution.
Answer» E given,Weight of NAOH (solute) = 8 gmVolume of solution = 500 mlDensity of the TOTAL solution = Let's calculate the weight of the solution The weight of the solution = volume × densityWeight of solvent = Weight of solution - Weight of solventWeight of solvent = 600 - 8 = 592 GM }w = weight of solute = 8 gmW = weight of solution = 592 gmVolume of solution = 1000 ml M = molar mass of solution = 40 g/molThe molality of the solution is 0.34.