9. Solutions

How many mL of ethanol are contained in a 750.0 mL bottle of wine that contains 11.0% (v/v) of ethanol?

Calculate the grams of solute needed to prepare the following:450 mL of a 2.0% m/v KOH solution.

What is the mass/volume percent concentration of the following solutions:0.075 mol sucrose (C₁₂H₂₂O₁₁) in 270 mL of solution.

The pain reliever ibuprofen is sold as an oral suspension for children 2-11 years of age. How many milligrams would you obtain in a 2.7 tsp dose if it contains 100 mg per 5 mL? (1 tsp = 5 mL)

A mouthwash contains 22.5% (v/v) alcohol. If the bottle of mouthwash contains 355 mL, what is the volume, in milliliters, of alcohol?

What is the difference between a 5.00% (m/m) glucose solution and a 5.00% (m/v) glucose solution?

What is the difference between a 10.0% (v/v) methanol (CH₄O) solution and a 10.0% (m/m) methanol solution?

Calculate the mass/volume percent (m/v) for the solute in each of the following:

a. 75 g of Na₂SO₄ in 250 mL of Na₂SO₄ solution

Calculate the grams or milliliters of solute needed to prepare the following:

c. 250. mL of a 10.0% (v/v) acetic acid solution

A dilute aqueous solution of boric acid, H₃BO₃ is often used as an eyewash. How would you prepare 500.0 mL of a 0.50% (m/v) boric acid solution?

What is the mass/volume percent concentration of the following solutions?

a. 0.078 mol KCl in 75 mL of solution

b. 0.044 mol sucrose (C₁₂H₂₂O₁₁) in 380 mL of solution

How many moles of each substance are needed to prepare the following solutions?

a. 50.0 mL of 8.0% (m/v) KCl (MW = 74.55 g/mol)

b. 200.0 mL of 7.5% (m/v) acetic acid (MW = 60.05 g/mol)

A patient receives 100. mL of 20.% (m/v) mannitol solution every hour.

b. How many grams of mannitol does the patient receive in 12 h?

A patient needs 100. g of glucose in the next 12 h. How many liters of a 5% (m/v) glucose solution must be given?

Nalorphine, a relative of morphine, is used to combat withdrawal symptoms in heroin users. How many milliliters of a 0.40% (m/v) solution of nalorphine must be injected to obtain a dose of 1.5 mg?