Question

find the molality of 30g of NaOH dissolved in 100g of solution​

Answer 1

Answer:

molality=kilograms of solventmoles of solute​

moles of NaOH=Mass of NaOHWeight of NaOH​=4025​=85​=0.625

kilograms of H2​O=1000Weight of H2​O​=1000100​=0.1

∴molality=kilograms of solventmoles of solute​=0.10.625​=6.25m

Hence, the correct answer is 6.25.