What volume of a 6.97 M stock solution do you need to prepare 500. mL of a 0.0191 M solution of KCl?

Question

When you need to produce a variety of diluted solutions of a solute, you can dilute a series of stock solutions. A stock solution has a significantly higher concentration of the given solute (typically 101 to 104 times higher than those of the diluted solutions). The high concentration allows many diluted solutions to be prepared using minimal amounts of the stock solution.

Answer 1

Greetings,

I'd be more than happy to assist you with solving these types of problems and others concerning the concepts of dilutions of solutions. Essentially the amount of moles of solute doesn't change when preparing a diluted solution. The stock solution and the concentrated solution have the same moles of solute with different amounts of solvent. Each solution can be solved for the amount of solute to equal M×V. Feel free to contact me and we can get started as soon as possible with an online session.