Question

What is the concentration of a solution in which 15 grams of sugar is dissolved in 0.2 L of water?

Answer 1

Answer:

0.2 M

Explanation:

Step 1: Given data

• Mass of sugar (sucrose): 15 g

• Volume of water: 0.2 L (we will assume it is the volume of the solution)

There are different ways to express the concentration of a solution. We will calculate molarity, which is one of the most used.

Step 2: Calculate the moles of sucrose

The molar mass of sucrose is 342.3 g/mol.

15 g × 1 mol/342.3 g = 0.044 mol

Step 3: Calculate the molarity of the solution

Molarity is equal to the moles of solute divided by the liters of solution.

M = 0.044 mol/0.2 L = 0.2 M