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# Account for the fact that nitroacetic acid, O2NCH2COOH (pKa 1.68), is a

ISBN: 9781133952848 483

## Solution for problem 4.42 Chapter 4

Organic Chemistry | 7th Edition

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Organic Chemistry | 7th Edition

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Problem 4.42

Account for the fact that nitroacetic acid, O2NCH2COOH (pKa 1.68), is a considerablystronger acid than acetic acid, CH3COOH (pKa 4.76).

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Name________________________________________ Lab Section______ Quiz 13, CH005 11/3/2016 1. Calculate the frequencies and the following colors of visible light and rank the colors in order of increasing frequency. ­9 blue ( = 448 nm) (b) red ( = 673 nm) (c) yellow ( = 586 nm) ­­ 1 nm = 1  10 m 2. The shortest wavelength of visible light is 400 nm; a wavelength in the ultraviolet range of the spectrum is 35 nm. (a) Calculate energies of the photons associated with light of these wavelengths. ­19 (b) It takes about 6  10 J of energy to break a chemical bond between two carbon atoms such as those found in the biological molecule DNA. Explain how the ultraviolet radiation can be a health hazard while the visible light isn't by comparing the photon energies you calculated in part (a) to this bond­breaking'' energy. ­10 3. An X­ray wavelength that is common for X­ray diffraction experiments is 1.54  10 m. What velocity would a neutron in a neutron diffraction experiment have to have in order to have the same wavelength (mass of neutron = 1.875  10 kg) ­27 a) How many orbitals belong to the following energy levels or sublevels in the atom (i) 1s________ (ii) n=3 __________ (iii) 4p___________ (iv) 3d___________ (b) Give all the allowed values of m (tle magnet

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Account for the fact that nitroacetic acid, O2NCH2COOH (pKa 1.68), is a