3.3 Molarity

What information is needed to calculate the molarity of a sulfuric acid solution?

Determine the molarity for each of the following solutions:

(a) 0.444 mol of CoCl₂ in 0.654 L of solution

(b) 98.0 g of phosphoric acid, H₃PO₄, in 1.00 L of solution

(c) 0.2074 g of calcium hydroxide, Ca(OH)₂, in 40.00 mL of solution

(d) 10.5 kg of Na₂SO₄·10H₂O in 18.60 L of solution

(e) 7.0 $\times$ 10⁻³ mol of I₂ in 100.0 mL of solution

(f) 1.8 $\times$ 10⁴ mg of HCl in 0.075 L of solution

Consider this question: What is the mass of the solute in 0.500 L of 0.30 M glucose, C₆H₁₂O₆, used for intravenous injection?

(a) Outline the steps necessary to answer the question.

(b) Answer the question.

Calculate the number of moles and the mass of the solute in each of the following solutions:

(a) 2.00 L of 18.5 M H₂SO₄, concentrated sulfuric acid

(b) 100.0 mL of 3.8 $\times$ 10⁻⁶ M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

(c) 5.50 L of 13.3 M H₂CO, the formaldehyde used to “fix” tissue samples

(d) 325 mL of 1.8 $\times$ 10⁻⁶ M FeSO₄, the minimum concentration of iron sulfate det…

Consider this question: What is the molarity of KMnO₄ in a solution of 0.0908 g of KMnO₄ in 0.500 L of solution?

(a) Outline the steps necessary to answer the question.

(b) Answer the question.

Calculate the molarity of each of the following solutions:

(a) 0.195 g of cholesterol, C₂₇H₄₆O, in 0.100 L of serum, the average concentration of cholesterol in human serum

(b) 4.25 g of NH₃ in 0.500 L of solution, the concentration of NH₃ in household ammonia

(c) 1.49 kg of isopropyl alcohol, C₃H₇OH, in 2.50 L of solution, the concentration of isopropyl alcohol in rubbing alcohol

(d) 0.029 g of I_…

There is about 1.0 g of calcium, as Ca²⁺, in 1.0 L of milk. What is the molarity of Ca²⁺ in milk?

If 0.1718 L of a 0.3556-M C₃H₇OH solution is diluted to a concentration of 0.1222 M, what is the volume of the resulting solution?

What volume of a 0.33-M C₁₂H₂₂O₁₁ solution can be diluted to prepare 25 mL of a solution with a concentration of 0.025 M?

What is the molarity of the diluted solution when each of the following solutions is diluted to the given final volume?

(a) 1.00 L of a 0.250-M solution of Fe(NO₃)₃ is diluted to a final volume of 2.00 L

(b) 0.5000 L of a 0.1222-M solution of C₃H₇OH is diluted to a final volume of 1.250 L

(c) 2.35 L of a 0.350-M solution of H₃PO₄ is diluted to a final volume of 4.00 L

(d) 22.50 mL of a 0.025-M sol…

A 2.00-L bottle of a solution of concentrated HCl was purchased for the general chemistry laboratory. The solution contained 868.8 g of HCl. What is the molarity of the solution?

What volume of a 0.20-M K₂SO₄ solution contains 57 g of K₂SO₄?