Question

Q. Find the amount of glucose required to be dissolved in 81.0g of water to give 10% by mass of solution?

Answer 1

Mass percent of solute in a solution is given as:

mass % = (weight of solute/mass of solution) 100

we are given that, mass % = 10% aqueous solution

Mass of solution = 81.0 g

Weight of solute = x g

10= 100x/81
x=10*81/100
x=8.1g

Therefore, 8.1 g of glucose needs to be dissolved in 81.0 g of water to obtain 10% aqueous solution.

Answer 2

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