Question

- You need to make 0.500 L of a 60.0 mM CaCl
_{2}solution from a 20.0 M CaCl_{2}stock solution. Determine how much stock solution and water you will need to make the dilute solution. Show your calculations.

Step 1

We have to calculate the volume of stock solution and water required to make 0.500 L of a 60.0 mM CaCl_{2} solution from a 20.0 M CaCl_{2} stock solution.

Step 2

On dilution, the amount of solute in the solution does not change. Therefore, Moles of CaCl_{2} in stock solution would be equal to the moles of CaCl_{2} in the diluted solution.

Step 3

Now, calculate the volume of stock solution using

Ms = 20.0 M

Md = 60.0 mM = 60.0&...

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