unit 8 -- molarity practice

Multiple Choice

A 355-mL soft drink sample contains 0.133 mol of sucrose (table sugar). What is the molar concentration of sucrose in the beverage?

• 0.27 M

• 0.47 M

• 0.37 M

• 0.57 M

Multiple Choice

A teaspoon of table sugar contains about 0.01 mol sucrose. What is the molarity of sucrose if a teaspoon of sugar has been dissolved in a cup of tea with a volume of 200 mL?

• 0.1 M

• 0.05 M

• 0.2 M

• 0.01 M

Multiple Choice

Calculate the molarity of 6.52 g of CoCl₂ (molar mass =128.9 g/mol) dissolved in an aqueous solution with a total volume of 75.0 mL. Hint: Change the grams to moles first!

• 0.75 M

• 0.53 M

• 0.82 M

• 0.67 M

Multiple Choice

Calculate the molarity of 14 g of FeCl₃ dissolved in an aqueous solution with a total volume of 230 mL. (Molar mass of FeCl₃ is 161 g/mol)

• 0.378 M

• 0.845 M

• 0.621 M

• 0.912 M