Chemistry For Changing Times (14th Edition)
Chemistry For Changing Times (14th Edition)
14th Edition
ISBN: 9780321972026
Author: John W. Hill, Terry W. McCreary
Publisher: PEARSON
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Chapter 17, Problem 47P
Interpretation Introduction

Interpretation: Antioxidant should be defined along with one example of natural antioxidant and two examples of synthetic antioxidant.

Concept introduction: Antioxidants are substances which preserve by hindering the degradation of food by oxygen. They inhibit the oxidation process. Antioxidants like thiols or vitamin C terminate the oxidative reactions. Plants and animals maintain the complex systems of antioxidants to balance their oxidative state, for instance glutathione and enzymes like catalase and superoxide dismutase, produced within, or the dietary antioxidants vitamin A, C, and E.

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Sketch, qualitatively, the potential energy curves of the N-N bond of N2H4, N2 and N3- graph. Explain why the energy at the minimum of each curve is not the same.
(a) Show that the lattice energies are inversely proportional to the distance between ions in MX (M = alkali metal, X = halide ions) by plotting the lattice energies of KF, KCl, and KI against the internuclear distances, dMX. The lattice energies of KF, KCl, and KI are 826, 717, and 645 kJ/mol, respectively. Does the correlation obtained correlate well? You will need to use a standard graphing program to construct the graph (such as a spreadsheet program). It will generate an equation for the line and calculate a correlation coefficient. (b) Estimate the lattice energy of KBr from your graph. (c) Find an experimental value for the lattice energy of KBr in the literature, and compare this value with the one calculated in (b). Do they agree?
Show the curved arrow mechanism and both products for the reaction between methyl iodide and propoxide. 1st attempt NV H 10: H H 1 Add the missing curved arrow notation. H + See Periodic Table

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Chemistry For Changing Times (14th Edition)

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