Describe how to prepare each solution from the dry solute and the solvent. c. 125 g of 1.0% NaNO₃ solution by mass

Key Concepts

Mass Percent Concentration

Mass percent concentration is a way to express the concentration of a solution, defined as the mass of solute divided by the total mass of the solution, multiplied by 100. In this case, a 1.0% NaNO3 solution means that there is 1.0 g of NaNO3 in every 100 g of the solution. Understanding this concept is crucial for calculating the amount of solute needed to achieve the desired concentration.

Solution Preparation

Preparing a solution involves dissolving a specific amount of solute in a solvent to achieve a desired concentration. For a 1.0% NaNO3 solution, you would need to calculate the mass of NaNO3 required for the total mass of the solution (125 g in this case) and then add enough solvent (usually water) to reach that total mass. This process ensures that the solution has the correct concentration.

Dilution and Mixing

Dilution is the process of reducing the concentration of a solute in a solution, typically by adding more solvent. When preparing a solution, it is important to mix the solute thoroughly with the solvent to ensure uniform distribution. Proper mixing is essential for achieving the desired concentration throughout the entire solution, which is particularly important in quantitative chemical applications.