Domanda del libro di testo
Most fish need at least 4 ppm dissolved O2 in water for survival. (a) What is this concentration in mol/L?
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Ch.13 - Properties of Solutions
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 13, Problema 94b
The presence of the radioactive gas radon (Rn) in well water presents a possible health hazard in parts of the United States. (b) A sample consisting of various gases contains 3.5 × 10-6 mole fraction of radon. This gas at a total pressure of 32 atm is shaken with water at 30 °C. Calculate the molar concentration of radon in the water.
Guida verificata passo dopo passo1
First, understand that the problem involves calculating the molar concentration of radon in water using Henry's Law, which relates the solubility of a gas in a liquid to the partial pressure of the gas above the liquid.
Identify the given values: the mole fraction of radon in the gas mixture is 3.5 × 10-6, and the total pressure of the gas mixture is 32 atm.
Calculate the partial pressure of radon using the formula: , where is the mole fraction of radon and is the total pressure.
Use Henry's Law to find the molar concentration of radon in water: , where is the Henry's Law constant for radon at 30 °C.
Look up the value of the Henry's Law constant for radon at 30 °C in a reliable source, then substitute the values into the equation to find the molar concentration of radon in the water.
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Mole Fraction
Mole fraction is a way of expressing the concentration of a component in a mixture. It is defined as the ratio of the number of moles of a specific component to the total number of moles of all components in the mixture. In this case, the mole fraction of radon indicates its proportion relative to other gases present, which is crucial for calculating its concentration in water.
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Percorso guidato
00:36
Mole Fraction Formula
Henry's Law
Henry's Law states that the amount of gas that dissolves in a liquid at a given temperature is directly proportional to the partial pressure of that gas above the liquid. This principle is essential for determining how much radon will dissolve in water when it is in contact with the gas at a specific pressure, allowing us to calculate its molar concentration in the water.
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Percorso guidato
01:40Henry's Law Calculations
Molar Concentration
Molar concentration, or molarity, is defined as the number of moles of solute per liter of solution. It provides a measure of how concentrated a solution is and is critical for understanding the amount of radon that can be expected to dissolve in water under the given conditions. This concept is key to solving the problem by converting the amount of radon from its mole fraction and pressure into a concentration value.
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Percorso guidato
00:53Molarity Concept
Pratica correlata
Domanda del libro di testo
The maximum allowable concentration of lead in drinking water is 9.0 ppb. (a) Calculate the molarity of lead in a 9.0-ppb solution.
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Domanda del libro di testo
The presence of the radioactive gas radon (Rn) in well water presents a possible health hazard in parts of the United States. (a) Assuming that the solubility of radon in water with 1 atm pressure of the gas over the water at 30 °C is 7.27⨉10-3 M, what is the Henry's law constant for radon in water at this temperature?
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Domanda del libro di testo
Most fish need at least 4 ppm dissolved O2 in water for survival. (b) What partial pressure of O2 above water is needed to obtain 4 ppm O2 in water at 10 °C? (The Henry's law constant for O2 at this temperature is 1.71⨉10-3 mol/L-atm.)
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