Question

A solution of glucose (c6h12o6) in water is labelled as 10% by weight. What would be the molality of the solution? (molar mass of glucose = 180 g/mol).

Answer 1

Answer:

molality is 0.6173

Explanation:

Given :

concentration of solution = 10% by mass

(10g glucose and 90 g water)

Molar mass of glucose is 189g

Solution:

Molality = (number of moles of solute/weight of solvent) X 1000

Number of moles = weight / molar mass

= 10/180

= 0.055

Molality = (0.055/90)X1000

= 0.6173