Calculate how many grams of solute and solvent are needed to prepare the following solutions.

g of 3.91% iron(III) chloride solution

g of 11.9% sucrose solution

45 kg of 12.5% sodium chloride solution

g of 15.1% potassium nitrate solution

(a)

Interpretation:

The grams of solute and solvent needed to prepare the given solution are to be calculated.

Concept Introduction:

Solution is composed of solute and solvent particles. Solute particles are always present in a lower amount as compared to the amount of the solvent in the solution. The solution can be concentrated and diluted on the basis of number of moles of solute present in the particular amount of the solvent. Mass percent is used to describe the quantity of a substance in the solution.

It is given that 525 g of 3.91 % iron(III) chloride solution is prepared.

The grams of solute is calculated by the formula,

Mass of solutein grams=Mass of solution×% of solute100

Substitute the values of mass of solution and % of solute particles in the above expression.

` Mass of solutein grams=525 g×3.91100=20

(b)

Interpretation:

The grams of solute and solvent needed to prepare the given solution are to be calculated.

Concept Introduction:

Solution is composed of solute and solvent particles. Solute particles are always present in a lower amount as compared to the amount of the solvent in the solution. The solution can be concentrated and diluted on the basis of number of moles of solute present in the particular amount of the solvent. Mass percent is used to describe the quantity of a substance in the solution.

(c)

Interpretation:

The grams of solute and solvent needed to prepare the given solution are to be calculated.

Concept Introduction:

Solution is composed of solute and solvent particles. Solute particles are always present in a lower amount as compared to the amount of the solvent in the solution. The solution can be concentrated and diluted on the basis of number of moles of solute present in the particular amount of the solvent. Mass percent is used to describe the quantity of a substance in the solution.

(d)

Interpretation:

The grams of solute and solvent needed to prepare the given solution are to be calculated.

Concept Introduction:

Solution is composed of solute and solvent particles. Solute particles are always present in a lower amount as compared to the amount of the solvent in the solution. The solution can be concentrated and diluted on the basis ofnumber of moles of solute present in the particular amount of the solvent. Mass percent is used to describe the quantity of a substance in the solution.