49.8 grams of KI is dissolved in 1.00 kg of solvent. What is the molality?
1 Answer
Jul 28, 2014
The molality of a solution is calculated by taking the moles of solute and dividing by the kilograms of solvent.
molality = number of moles of solute/ mass of solvent in kg
number of moles of KI = mass of KI / molar mass of KI
number of moles of KI = 49.8 g / 166.0 g
number of moles of KI = 0.3 moles
molality = 0.3 moles / 1kg
molality = 0.3 mol
