Answer:
2.24 M
Explanation:
Molality is a measure of molar concentration of a solution and it can be calculated using the formula;
Molality = mole of solute ÷ kg of solvent
To calculate the number of moles present in the solute, we use the formula;
mole = mass ÷ molar mass
Molar mass of Fe(ClO2)3 = 56 + {35.5 + 16(2)}3
= 56 + (35.5 + 32)3
= 56 + (67.5)3
= 56 + 202.5
= 258.5g/mol
mole = 435/258.5
mole of Fe(ClO2)3 = 1.68mol
750g of solvent = 750/1000 = 0.750kg of solvent
Molality of the solution is thus: 1.68/0.750
Molality = 2.24 M.
