Calculate the molality of a 150% by mass solution of MgCl, FW-95.3 g/mol in H.O. The density of tis solution is 1.127 gim 0.0134
m 0.157 m 1.58 m 1.86 m 11.8 m igator Delete Backspace U 10 pilli
1 answer:
Answer: 1.86 m
Explanation:
Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.
where,
n = moles of solute
= weight of solvent in g
Given : 15.0 grams of is present in 100 g of solution
Moles of solute
mass of solution = 100 g
density of solution = 1.127g/ml
mass of solvent = mass of solution - mass of solute = 100 g - 15.0g = 85.0 g
Thus molality of a 15.0% by mass solution of is 1.86m.
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