
(a)
Interpretation: The electron dot structures for ethanol, ethylamine, acetonitrile, and acrylonitrile have to be drawn, molecular geometry around the central atom in these molecules should be determined.
Concept introduction:
Lewis dot structure: For a given molecule, the bonding concerning the atoms and also the lone pairs can be shown by a diagram.
In this structure a single bond is represented by one dot pair and double bond is represented by two dot pairs and so on.
VSEPR Theory [Valence Shell Electron Pair Repulsion Theory]:
Geometry of the molecules can be predicted using VSEPR Theory. It is based on the number of electron pairs around the central atom of the molecule. Depending upon the bond pairs and lone pairs, geometries can be classified as linear, bent, pyramidal, and trigonal planar, tetrahedral, and octahedral and so on.
(b)
Interpretation: The balanced equations for each step in the synthesis of acetonitrile from ethanol should be written.
Concept introduction:
- For
chemical reaction balanced chemical reaction equation written in accordance with the Law of conservation of mass. - Law of conservation of mass states that for a reaction total mass of the reactant and product must be equal.
- Stoichiometric factor is a relationship between reactant and product which is obtained from the balanced chemical equation for a particular reaction.
(c)
Interpretation: Atom economy for the synthesis of acetonitrile from ethanol should be determined.
Concept introduction:
Atom economy: The amount of mass of reactants which is converted into useful products.
Atom economy

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Chapter 20 Solutions
OWLv2 6-Months Printed Access Card for Kotz/Treichel/Townsend's Chemistry & Chemical Reactivity, 9th, 9th Edition
- 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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