Question

What volume of water is needed to make up a 6.00% (m/v) solution of copper (II) sulphate when 12.0 g of it will be added to water?

Answer 1

Answer:

200 mL of water is needed to make up a 6.00% (m/v) solution of copper (II) sulphate when 12.0 g of it will be added to water.

Explanation:

The solution is the result of the mixture between the solute, which is the substance that dissolves, and the solvent, which is the substance in which a solute dissolves. That is, a solution (or solution) is a mixture of two or more components, perfectly homogeneous since each component is intimately mixed with the other.

The concentration of solutions is the amount of solute contained in a given amount of solvent or solution. A unit of concentration is the percent weight to volume.

The percent weight to volume is the percentage ratio between the weight of the solute and the volume of the solution. It is calculated as:

$Percent =\frac{mass of solute}{volume of solution} *100$

Mass is measured in grams, while volume is measured in mL.

In this case:

• Percent weight to volume= 6%
• mass of solute= 12 g
• volue of solution= ?

Replacing:

$6=\frac{12 g}{volume of solution} *100$

Solving:

volume of solution*6= 12 g*100

$volume of solution=\frac{12 g}{6} *100$

volume of solution= 200 mL

200 mL of water is needed to make up a 6.00% (m/v) solution of copper (II) sulphate when 12.0 g of it will be added to water