Using the information in Table 9.4, describe how you would...

Using the information in Table 9.4, describe how you would prepare each of the following solutions. a. About 2 L of $3.0 \mathrm{M} \mathrm{HNO}_3$ from dilute nitric acid solution b. About 500 mL of 1.5 M aqueous ammonia from concentrated aqueous ammonia solution c. About 5 L of 0.2 M HCl from concentrated hydrochloric acid solution

Using the information in Table 9.4, describe how you would prepare each of the following solutions.
a. About 2 L of $3.0 \mathrm{M} \mathrm{HNO}_3$ from dilute nitric acid solution
b. About 500 mL of 1.5 M aqueous ammonia from concentrated aqueous ammonia solution
c. About 5 L of 0.2 M HCl from concentrated hydrochloric acid solution

Key Concepts

Dilution Principle (M?V? = M?V?)

This principle is fundamental in solution preparation and calculates the volume of a concentrated solution required to achieve a target concentration and volume of a diluted solution. It is based on the conservation of the number of moles of solute before and after dilution, ensuring that the product of the initial concentration and its volume equals the product of the final concentration and final volume.

Molarity

Molarity, defined as moles of solute per liter of solution, is a key concept for solution preparation. It quantifies the concentration of a solution and is essential in determining how much of a stock solution is needed to reach a specific molar concentration in the final solution.

Stock Solution Utilization

Understanding the role of stock solutions, which are more concentrated forms of substances, is crucial. By accurately measuring a portion of the stock solution and then diluting it with a solvent to a desired final volume, the target concentration is achieved while ensuring that the total number of moles of solute remains constant.

Accurate Measurement and Mixing Techniques

The success of preparing a solution relies heavily on precise measurement of both the stock solution and the solvent, as well as thorough mixing. This ensures uniform concentration throughout the solution and adherence to the intended specifications of volume and molarity.

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