Various ways to measure and represent concentration are available. The following lists the common concentration methods discussed in Chemistry 20. Match the concentration method with the correct description. A way of expressing very dilute concentrations of a substance Choose... Choose... A way of expressing extremely dilute concentrations of a substance Used for solutes that are solids in pure form and are dissolved in a liquid solvent Choose... Used for solutions prepared by dissolving a liquid solute in a liquid solvent amount concentration (mol/L) percentage by volume (% V/V) percentage by mass (% W/W) percentage mass by volume (% W/V) parts per billion (ppb) Used when both the solute and solvent are measured in grams parts per million (ppm) Used when the solute is measured as a molar amount in one litre of solution amount concentration (mol/L)

Various ways to measure and represent concentration are available. The following lists the common concentration methods discussed in Chemistry 20. Match the concentration method with the correct description. A way of expressing very dilute concentrations of a substance Choose... Choose... A way of expressing extremely dilute concentrations of a substance Used for solutes that are solids in pure form and are dissolved in a liquid solvent Choose... Used for solutions prepared by dissolving a liquid solute in a liquid solvent amount concentration (mol/L) percentage by volume (% V/V) percentage by mass (% W/W) percentage mass by volume (% W/V) parts per billion (ppb) Used when both the solute and solvent are measured in grams parts per million (ppm) Used when the solute is measured as a molar amount in one litre of solution amount concentration (mol/L)

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter6: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 123CP: The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental...

See similar textbooks

Similar questions

Distinguish between the solute and solvent in each of the following solutions: a saltwater [NaCl(aq)]; b sterling silver (92.5%Ag,7.5%Cu); c air about 80%N2,20%O2. On what do you base your distinctions? Sterling silver is an alloy of 92.5 silver and 7.5 another metal, usually copper.
Calculate the concentration in (w/w) of the following solutions: a. 20.0g of solute is dissolved in enough water to give 150.mL of solution. The density of the resulting solution is 1.20g/mL. b. A 10.0-mL sample with a density of 1.10g/mL leaves 1.18g of solid residue when evaporated. c. A 25.0-g sample of solution on evaporation leaves a 1.87-g residue of MgCl2.
A solution is defined as a homogeneous mixture. Is a small sample of air a solution? Is the atmosphere a solution?
In a dilute solution of sodium chloride in water, the sodium chloride is the: a. solvent. b. solute. c. precipitate. d. reactant.
Apply Students conducted a lab to investigate limiting and excess reactants. The students added different volumes of sodium phosphate solution (Na3PO4) to a beaker. They then added a constant volume of cobalt(ll) nitrate solution (CO(NO3)2) stirred the contents, and allowed the beakers to sit overnight. The next day, each beaker had a purple precipitate at the bottom. The students decanted the supernatant from each beaker, divided it into two samples, and added one drop Of sodium phosphate solution to one sample and one drop of cobalt(ll) nitrate solution to the second sample. Their results are shown in Table 11.5. a. Write a balanced chemical equation for the reaction. b. Based on the results, identify the limiting reactant and the excess reactant for each trial.
Calculate the concentration in (v/v) of the following solutions: a. 200.mL of solution contains 15mL of alcohol. b. 200.mL of solution contains 15mL of any soluble liquid solute. c. 8.0fluidounces of oil is added to 2.0gallons(256fluidounces) of gasoline. d. A solution of alcohol and water is separated by distillation. A 200.-mL sample gives 85.9mL of alcohol.
What mass of NaHCO3 must decompose to produce 448g of Na2CO3 in 2NaHCO3Na2CO3+H2O+CO2?
A student was given a 1.6240-g sample of a mixture of sodium nitrate and sodium chloride and was asked to find the percentage of each compound in the mixture. She dissolved the sample and added a solution that contained an excess of silver nitrate. The silver ion precipitated all of the chloride ion in the mixture as silver chloride. It was filtered, dried, and weighed. Its mass was 2.056g. What was the percentage of each compound in the mixture?
In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area and CO2 was released by the reaction. Was sufficient Na2CO3 used to neutralize all of the acid?
Describe the use of gravimetric analysis to determine the percentage of chlorine in a water-soluble unknown solid.
A researcher dissolved 1.382g of impure copper in nitric acid to produce a solution of Cu(NO3)2. The solution went through a series of steps in which Cu(NO3)2 was changed to Cu(OH)2, then to CuO, and then to a solution of CuCl2. This was treated with an excess of a soluble phosphate, precipitating all the copper in the original sample as pure Cu3(PO4)2. The precipitate was dried and weighed. Is mass was 2.637g. Find the percentage by mass of copper in the original sample.
The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 parts of solution. Mathematically, by mass: ppm=gsolutegsolution=mgsolutekgsolution In the case of very dilute aqueous solutions, a concentration of 1.0 ppm is equal to 1.0 g of solute per 1.0 mL, which equals 1.0 g solution. Parts per billion is defined in a similar fashion. Calculate the molarity of each of the following aqueous solutions. a. 5.0 ppb Hg in H2O b. 1.0 ppb CHCl3 in H2O c. 10.0 ppm As in H2O d. 0.10 ppm DDT (C14H9Cl5) in H2O