Chemistry in Context
8th Edition
ISBN: 9780073522975
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Chapter 12, Problem 52Q
You are the head of a government facing another year of a long drought and a serious risk of famine. Another nation has offered you a supply of genetically modified rice to feed your people. List two advantages and two disadvantages of accepting the aid. Decide whether you would accept it and explain why.
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Predict the major products of this reaction.
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Draw only the major product or products in the drawing area below. If there's more than one major product, you can draw them in any arrangement you like.
Be sure you use wedge and dash bonds if necessary, for example to distinguish between major products with different stereochemistry.
If there will be no products because there will be no significant reaction, just check the box under the drawing area and leave it blank.
Note for advanced students: you can ignore any products of repeated addition.
Explanation
Check
Click and drag to start drawing a structure.
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Given a system with an anodic overpotential, the variation of η as a function of current density- at low fields is linear.- at higher fields, it follows Tafel's law.Calculate the range of current densities for which the overpotential has the same value when calculated for both cases (the maximum relative difference will be 5%, compared to the behavior for higher fields).
Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
N2 (g) + 3H2 (g) = 2NH3 (g) AGº = -34. KJ
Now suppose a reaction vessel is filled with 8.06 atm of nitrogen (N2) and 2.58 atm of ammonia (NH3) at 106. °C. Answer the following questions about this
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Under these conditions, will the pressure of N2 tend to rise or fall?
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Is it possible to reverse this tendency by adding H₂?
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If you said the tendency can be reversed in the second question, calculate
the minimum pressure of H₂ needed to reverse it.
Round your answer to 2 significant digits.
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Chapter 12 Solutions
Chemistry in Context
Ch. 12.1 - Prob. 12.2YTCh. 12.1 - Prob. 12.3YTCh. 12.2 - Prob. 12.5CTCh. 12.2 - Prob. 12.6YTCh. 12.3 - Prob. 12.8CTCh. 12.3 - Prob. 12.9CTCh. 12.4 - Prob. 12.12YTCh. 12.5 - Scientific Practices Function Follows Form In...Ch. 12.6 - Prob. 12.15YTCh. 12 - The theme of this chapter is that DNA guides the...
Ch. 12 - Prob. 2QCh. 12 - Prob. 4QCh. 12 - Consider the structural formulas in Figure 13.1....Ch. 12 - Prob. 6QCh. 12 - Prob. 7QCh. 12 - Prob. 8QCh. 12 - Prob. 9QCh. 12 - Prob. 10QCh. 12 - Prob. 11QCh. 12 - Prob. 12QCh. 12 - Prob. 13QCh. 12 - Prob. 14QCh. 12 - Prob. 15QCh. 12 - Prob. 16QCh. 12 - Prob. 17QCh. 12 - Refer to Figure 11.17. Select two examples of...Ch. 12 - Prob. 20QCh. 12 - Prob. 21QCh. 12 - Prob. 22QCh. 12 - Explain one similarity and one difference between...Ch. 12 - Prob. 24QCh. 12 - Prob. 25QCh. 12 - Prob. 26QCh. 12 - Prob. 27QCh. 12 - Prob. 28QCh. 12 - Prob. 29QCh. 12 - Prob. 30QCh. 12 - Prob. 31QCh. 12 - Prob. 32QCh. 12 - Prob. 33QCh. 12 - Prob. 34QCh. 12 - Prob. 35QCh. 12 - Prob. 36QCh. 12 - Prob. 38QCh. 12 - Prob. 41QCh. 12 - Prob. 42QCh. 12 - Prob. 43QCh. 12 - List two advantages and two disadvantages of...Ch. 12 - Prob. 46QCh. 12 - Prob. 47QCh. 12 - Prob. 49QCh. 12 - Recently developed techniques have dramatically...Ch. 12 - Find a transgenic organism not discussed in the...Ch. 12 - You are the head of a government facing another...
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- Four liters of an aqueous solution containing 6.98 mg of acetic acid were prepared. At 25°C, the measured conductivity was 5.89x10-3 mS cm-1. Calculate the degree of dissociation of the acid and its ionization constant.Molecular weights: O (15.999), C (12.011), H (1.008).Limiting molar ionic conductivities (λ+0 and λ-0) of Ac-(aq) and H+(aq): 40.9 and 349.8 S cm-2 mol-1.arrow_forwardDetermine the change in Gibbs energy, entropy, and enthalpy at 25°C for the battery from which the data in the table were obtained.T (°C) 15 20 25 30 35Eo (mV) 227.13 224.38 221.87 219.37 216.59Data: n = 1, F = 96485 C mol–1arrow_forwardIndicate the correct options.1. The units of the transport number are Siemens per mole.2. The Siemens and the ohm are not equivalent.3. The Van't Hoff factor is dimensionless.4. Molar conductivity does not depend on the electrolyte concentration.arrow_forward
- Ideally nonpolarizable electrodes can1. participate as reducers in reactions.2. be formed only with hydrogen.3. participate as oxidizers in reactions.4. form open and closed electrochemical systems.arrow_forwardIndicate the options for an electrified interface:1. Temperature has no influence on it.2. Not all theories that describe it include a well-defined electrical double layer.3. Under favorable conditions, its differential capacitance can be determined with the help of experimental measurements.4. A component with high electronic conductivity is involved in its formation.arrow_forwardTo describe the structure of the interface, there are theories or models that can be distinguished by:1. calculation of the charge density.2. distribution of ions in the solution.3. experimentally measured potential difference.4. external Helmoltz plane.arrow_forward
- Indicate the correct options when referring to Luther's equation:1. It is not always easy to compare its results with experimental results.2. It depends on the number of electrons exchanged in the species involved.3. Its foundation is thermodynamic.4. The values calculated with it do not depend on temperature.arrow_forwardIndicate which of the unit options correspond to a measurement of current density.1. A s m-22. mC s-1 m-23. Ω m-24. V J-1 m-2arrow_forwardIndicate the options that are true when referring to electrode membranes:1. The Donnan potential, in general, does not always intervene in membranes.2. There are several ways to classify the same membrane.3. Any membrane can be used to determine the pH of a solution.4. Only one solution and one membrane are needed to determine the pH of that solution.arrow_forward
- Calculate the maximum volume of carbon dioxide gasarrow_forwardIn galvanic cells, their potential1. can be measured with a potentiometer2. does not depend on the equilibrium constant of the reaction occurring within them3. is only calculated from the normal potentials of the electrodes they comprise4. can sometimes be considered a variation in a potential differencearrow_forwardIf some molecules in an excited state collide with other molecules in a ground state, this process1. can occur in solution and in the gas phase.2. can be treated as a bimolecular process.3. always results in collisional deactivation.4. does not compete with any other process.arrow_forward
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