EP GENERAL CHEMISTRY-MOD.MASTERINGCHEM.
11th Edition
ISBN: 9780133897340
Author: Petrucci
Publisher: PEARSON CO
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Chapter 9, Problem 7E
Interpretation Introduction
Interpretation:
The
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Br
HO
?
HO
✓
OH
Use the literature Ka value of the acetic acid, and the data below to answer these questions. Note: You will not use the experimental titration graphs to answer the questions that follow.
Group #1:
Buffer pH = 4.35
Group #2:
Buffer pH = 4.70
Group #3:
Buffer pH = 5.00
Group #4:
Buffer pH = 5.30
Use the Henderson-Hasselbalch equation, the buffer pH provided and the literature pKa value of acetic acid to perform the following:
a) calculate the ratios of [acetate]/[acetic acid] for each of the 4 groups buffer solutions above.
b) using the calculated ratios, which group solution will provide the best optimal buffer (Hint: what [acetate]/[acetic acid] ratio value is expected for an optimal buffer?)
c) explain your choice
How would you prepare 1 liter of a 50 mM Phosphate buffer at pH 7.5 beginning with K3PO4 and 1 M HCl or 1 M NaOH? Please help and show calculations. Thank you
Chapter 9 Solutions
EP GENERAL CHEMISTRY-MOD.MASTERINGCHEM.
Ch. 9 - Prob. 1ECh. 9 - Suppose that lanthanum (Z = 57) were a newly...Ch. 9 - The following densities, in grams per cubic...Ch. 9 - The blowing melting points are in degrees Celsius....Ch. 9 - Mendeleev's periodic table did not preclude the...Ch. 9 - Prob. 6ECh. 9 - Prob. 7ECh. 9 - Concerning the incomplete seventh period of the...Ch. 9 - For each of the following pairs, indicate the atom...Ch. 9 - Indicate the smallest and the largest species...
Ch. 9 - Explain why the radii of atoms do not simply...Ch. 9 - The masses of individual atoms can be determined...Ch. 9 - Which is (a) the smallest atom in group 13; (b)...Ch. 9 - How would you expect the sizes of the hydrogen...Ch. 9 - Prob. 15ECh. 9 - Explain why the generalizations presented in...Ch. 9 - Among the following ions, several pairs are...Ch. 9 - Prob. 18ECh. 9 - All the isoelectronic species illustrated in the...Ch. 9 - Prob. 20ECh. 9 - Use principles established in this chapter to...Ch. 9 - Are there any atoms for which the second...Ch. 9 - Some electron affinities are negative quantities,...Ch. 9 - How much energy, in pules, must be absorbed to...Ch. 9 - How much energy, in kilojoules, is required to...Ch. 9 - Prob. 26ECh. 9 - The production of gaseous bromide ions from...Ch. 9 - Use ionization energies and electron affinities...Ch. 9 - The Naa ion and the Ne atom are isoelectronic. The...Ch. 9 - Prob. 30ECh. 9 - Compare the elements Al, Si, S, and Cl. a. Place...Ch. 9 - Compare the elements Na, Mg, O, and P. a. Place...Ch. 9 - Unpaired electrons are found in only one of the...Ch. 9 - Which of the following species has the greatest...Ch. 9 - Which of the following species would you expect to...Ch. 9 - Write electron configurations consistent with the...Ch. 9 - Must all atoms with an odd atomic number be...Ch. 9 - Neither Co24 nor Co24 has 4s electrons in its...Ch. 9 - Use ideas presented in this chapter to indicate...Ch. 9 - Arrange the following atoms in order of increasing...Ch. 9 - Arrange the following species in order of...Ch. 9 - For the following groups of elements, select the...Ch. 9 - Prob. 43ECh. 9 - Of the species Naa, Na, F, and F-, which has the...Ch. 9 - Match each of the lettered items on the left with...Ch. 9 - Prob. 46ECh. 9 - Which of the following ions are unlikely to be...Ch. 9 - Which of the following ions are likely to be found...Ch. 9 - Four atoms and/or ions are sketched below in...Ch. 9 - Prob. 50IAECh. 9 - In Mendeleev's time, indium oxide, which is 82.5%...Ch. 9 - Instead of accepting the atomic mass of indium...Ch. 9 - Refer to Figure 9-11 and explain why the...Ch. 9 - Explain why the third ionization energy of Li(g)...Ch. 9 - Prob. 55IAECh. 9 - Prob. 56IAECh. 9 - Studies done in 1880 showed that a chloride of...Ch. 9 - Assume that atoms are herd spheres, and use the...Ch. 9 - When sodium chloride is strongly heated in a...Ch. 9 - Use information from Chapters 8 and 9 to calculate...Ch. 9 - Refer only to the periodic table on the inside...Ch. 9 - Refer to the footnote on page 393. Then use values...Ch. 9 - Prob. 63IAECh. 9 - Prob. 64IAECh. 9 - The work functions for a number of metals are...Ch. 9 - The following are a few elements and their...Ch. 9 - Gaseous sodium atoms absorb quanta with the...Ch. 9 - A method for estimating electron affinities is to...Ch. 9 - We have seen that the wave functions of...Ch. 9 - In your own words, define the following terms (a)...Ch. 9 - Briefly describe each of the following ideas or...Ch. 9 - Explain the important distinctions between each...Ch. 9 - Prob. 73SAECh. 9 - Prob. 74SAECh. 9 - Prob. 75SAECh. 9 - Prob. 76SAECh. 9 - Prob. 77SAECh. 9 - An ion that is isoelectronic with Se2- is (a) S2-...Ch. 9 - Write electron configurations to show the first...Ch. 9 - Explain why the first ionization energy of Mg is...Ch. 9 - Prob. 81SAECh. 9 - Prob. 82SAECh. 9 - Find three pairs of elements that are out of order...Ch. 9 - Prob. 84SAECh. 9 - Prob. 85SAECh. 9 - Prob. 86SAECh. 9 - Prob. 87SAECh. 9 - Prob. 88SAECh. 9 - In multielectron atoms many of the periodic trends...Ch. 9 - Consider a nitrogen atom in the ground state and...Ch. 9 - Prob. 91SAECh. 9 - Describe how the ionization energies of the ions...Ch. 9 - Prob. 93SAECh. 9 - Prob. 94SAECh. 9 - When compared to a nonmetal of the same period, a...Ch. 9 - Prob. 96SAECh. 9 - Which of the following has a smaller radius than a...Ch. 9 - Prob. 98SAECh. 9 - The electrons lost when Fe ionizes to Fe2- are (a)...Ch. 9 - Prob. 100SAE
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