QUI 118 USC Chemistry Glucose Solution & Volume of Alcohol Questions

Universidad del Sagrado Corazón
Escuela de Salud y Ciencias
Fundamentos de Química General, Orgánica y Bioquímica
QUI 118
(Referencia: Timberlake, Karen C. Chemistry: An Introduction to General Organic, and
Biological Chemistry Tenth edition, Harper Collins Publishers, 2011.)
7.31 What is the difference between a 5% (m/m) glucose solution and a 5% (m/v)
glucose solution?
7.33 Calculate the mass percent (m/m) for the solute in each of the following solutions:
a. 25 g of KCl and 125 g of H2O
b. 12 g of sugar in 225 g of tea solution with sugar
c. 8.0 g of in 80.0 g of solution CaCl2
7.35 Calculate the mass/volume percent (m/v) for the solute in each of the following
a. 75 g of in 250 mL of solution Na2SO4
b. 39 g of sucrose in 355 mL of a carbonated drink
7.37 Calculate the grams or milliliters of solute needed to prepare the following
a. 50.0 mL of a 5.0% (m/v) KCl solution
b. 1250 mL of a 4.0% (m/v) NH4Cl solution
c. 250. mL of a 10.0% (v/v) acetic acid solution
7.39 A mouthwash contains 22.5% (v/v) alcohol. If the bottle of mouthwash contains
355 mL, what is the volume, in milliliters, of alcohol?
7.41 A patient receives 100. mL of 20.% (m/v) mannitol solution every hour.
a. How many grams of mannitol are given in 1 h?
b. How many grams of mannitol does the patient receive in 12 h?
7.43 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?
7.45 Calculate the amount of solution (g or mL) that contains each of the following
amounts of solute:
a. 5.0 g of from a 25% (m/m) LiNO3 solution
b. 40.0 g of KOH from a 10.0% (m/v) KOH solution
c. 2.0 mL of formic acid from a 10.0% (v/v) formic acid solution
7.47 Calculate the molarity of each of the following solutions:
a. 2.00 moles of glucose in 4.00 L of solution
b. 4.00 g of KOH in 2.00 L of solution
c. 5.85 g of NaCl in 400. mL of solution
7.49 Calculate the grams of solute needed to prepare each of the following solutions:
a. 2.00 L of a 1.50 M NaOH solution
b. 4.00 L of a 0.200 M KCl solution
c. 25.0 mL of a 6.00 M HCl solution
7.51 What volume is needed to obtain each of the following amounts of solute?
a. liters of a 2.00 M KBr solution to obtain 3.00 moles
of KBr
b. liters of a 1.50 M NaCl solution to obtain 15.0 moles of NaCl
c. milliliters of a 0.800 M Ca(NO3)2 solution to obtain 0.0500 mole of Ca(NO3)2
7.53 To make tomato soup, you add one can of water to the condensed soup. Why is
this a dilution?
7.55 Calculate the concentration of each of the following diluted solutions:
a. 2.0 L of a 6.0 M HCl solution is added to water so that the
final volume is 6.0 L.
b. Water is added to 0.50 L of a 12 M NaOH solution to make 3.0 L of a diluted NaOH
c. A 10.0-mL sample of a 25% (m/v) KOH solution is diluted with water so that the final
volume is 100.0 mL.
d. A 50.0-mL sample of a 15% (m/v) H2SO4 solution is
added to water to give a final volume of 250 mL.
7.57 What is the volume, in milliliters, of each of the following
diluted solutions?
a. A 1.5 M HCl solution prepared from 20.0 mL of a 6.0 M
HCl solution
b. A 2.0% (m/v) LiCl solution prepared from 50.0 mL of a 10.0% (m/v) LiCl solution
c. A 0.500 M H3PO4 solution prepared from 50.0 mL of a 6.00 M H3PO4 solution
d. A 5.0% (m/v) glucose solution prepared from 75 mL of a 12% (m/v) glucose solution
7.59 Determine the volume, in milliliters, required to prepare each of the following
diluted solutions:
a. 255 mL of a 0.200 M HNO3 solution from a 4.00 M HNO3 solution
b. 715 mL of a 0.100 M MgCl2 solution using a 6.00 M MgCl2 solution
c. 0.100 L of a 0.150 M KCl solution using an 8.00 M KCl

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