Final answer:
To prepare a dilute solution from a stock solution, measure a specific volume of the concentrated stock and add solvent to it until the desired concentration is reached, using the dilution formula C1V1 = C2V2.
Step-by-step explanation:
Appropriate techniques for preparing a dilute solution from a stock solution involve measuring a specific volume of the stock solution, which is a concentrated solution with a known concentration, and then adding solvent to achieve the desired lower concentration. To prepare the dilute solution, you must calculate the number of moles of solute that should be present in the final desired volume and determine the corresponding volume of the stock solution required. This is often accomplished using the formula C1V1 = C2V2, where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the concentration and volume of the diluted solution, respectively. For instance, to make a less concentrated solution, you would withdraw a measured volume of the stock solution and add it to a predetermined volume of solvent, thereby reducing the overall concentration but not the total number of moles of solute.