g What is the molarity of an aqueous solution that is 2.50 % glucose (C6H12O6) by mass? Assume that the density of the solution is 1.04 g/cm3

Question

Chemistry

Guest

1 October, 07:45

g What is the molarity of an aqueous solution that is 2.50 % glucose (C6H12O6) by mass? Assume that the density of the solution is 1.04 g/cm3

+3

Answers (1)

Know the Answer?

Cassis · Answer 1

0.144 M

Explanation:

First, we will calculate the mass/volume percent (% m/v) using the following expression.

% m/v = % m/m * density

% m/v = 2.50 % * 1.04 g/cm³

% m/v = 2.60 %

This means that there are 2.60 grams of solute per 100 cm³ (100 mL) of solution. The molarity of glucose is:

M = mass of glucose / molar mass of glucose * liters of solution

M = 2.60 g / 180.16 g/mol * 0.100 L

M = 0.144 M