What molal solution is made when adding 90 grams of K2SO4 to 0.55 kg of water?
Morality is defined as number of moles of solute dissolved in per kg of solvent.
It is denoted by m.
Moles of solute = weight of K2SO4 molar mass of K2SO4
Molar mass of K2SO4= 2×39 + 1×32 +4×16 =174g/mol
Moles of K2SO4=
The solution is 0.96 molar.