Question

1)
You need to make an aqueous solution of 0.209 M potassium fluoride for an experiment in lab, using a 300 mL volumetric flask. How much solid potassium fluoride should you add?

     grams

2)How many milliliters of an aqueous solution of 0.244 M zinc acetate is needed to obtain 11.1 grams of the salt?

     mL

3)
In the laboratory you dissolve 13.9 g of copper(II) chloride in a volumetric flask and add water to a total volume of 125 . mL.

What is the molarity of the solution?  M

4)
In the laboratory you dissolve 20.9 g of potassium fluoride in a volumetric flask and add water to a total volume of 375 mL.

What is the molarity of the solution?  M.

What is the concentration of the potassium cation?  M.

What is the concentration of the fluoride anion?  M.

5)
In the laboratory you dissolve 24.4 g of zinc acetate in a volumetric flask and add water to a total volume of 375 mL.

What is the molarity of the solution?  M.

What is the concentration of the zinc cation?  M.

What is the concentration of the acetate anion?  M.

6)In the laboratory you dissolve 13.9 g of copper(II) chloride in a volumetric flask and add water to a total volume of 125 mL.

What is the molarity of the solution?  M.

What is the concentration of the copper(II) cation?  M.

What is the concentration of the chloride anion?  M.

7)
You wish to make a 0.350 M hydroiodic acid solution from a stock solution of 3.00 M hydroiodic acid. How much concentrated acid must you add to obtain a total volume of 100 mL of the dilute solution?

mL

8)
You wish to make a 0.282 M nitric acid solution from a stock solution of 12.0 M nitric acid. How much concentrated acid must you add to obtain a total volume of 150 mL of the dilute solution?

mL

9)
In the laboratory you dilute 2.59 mL of a concentrated 12.0 M hydrochloric acid solution to a total volume of 50.0 mL. What is the concentration of the dilute solution?

M

Answer 1