Question

A chemist prepares a solution of copper(II) sulfate CuSO4 by measuring out 79.g of copper(II) sulfate into a 500.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in /molL of the chemist's copper(II) sulfate solution. Be sure your answer has the correct number of significant digits.

Answer 1

Answer:

The concentration of the copper(II) sulfate solution is 0.99 M

Explanation:

Step 1: Data given

Mass of copper(II) sulfate = 79 grams

Volume of the flask = 500 mL

Molar mass copper(II) sulfate = 159.61 g/mol

Step 2: Calculate moles copper(II) sulfate

Moles CuSO4 = Mass CuSO4 / molar mass CuSO4

Moles CuSO4 = 79.0 grams / 159.61 g/mol

Moles CuSO4 = 0.495 moles

Step 3: Calculate concentration

Concentration CuSO4 = moles / volume

Concentration CuSO4 = 0.495 moles / 0.5 L

Concentration = 0.99 M

The concentration of the copper(II) sulfate solution is 0.99 M