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Which of the folowing phospholipids has a permanent charge, regardless of the pH of the solution?...
11 of 15 The most likely pH of a solution of magnesium hydroxide is o 0.0 o 5.0 o 7.0 o 10.0 12 of 15 The pH of a 0.0035 M HI solution is o 11.5 o 2.5 5.7 О 8.3 13 of 15 Ka for a 0.100 M hydrofluoric acid solution where whose pH is 2.23 is o 3.5x104 3.5x10 О 8.0x10 1 o 8.0x102 14 of 15 The pH of a 0.0125 M ethanoic acid (Ka=1.8x10) solution is...
which of the following describes an unsaturated
solution?
Which of the following describes an unsaturated solution? Multiple Choice A solution that has the maximum number of grams of solute dissolved O A solution that has less than the maximum number of grams of solute dissolved None of the choices are correct A solution that has the maximum number of grams of solute dissolved A solution that has less than the maximum number of grams of solute dissolved None of the...
A solution is prepared by dissolving 0.23 mol of formic acid and 0.27 mol of sodium formate in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of NaOH to this buffer solution causes the pH to increase slightly. The pH does not increase drastically because the NaOH reacts with the present in the buffer solution. The K, of formic acid is 1.8 x 10+ A formic acid B. sodium formate C water D. sodium E....
6. At neutral pH, which of the following amino acids has a net positive charge, which has a net negative charge, and which is neutral? (Hint: Draw the various charged forms of each amino acid before deciding.) a) Aspartic acid b) Histidine c) Valine 7. Which of the following forms of aspartic acid would you expect to predominate at low pH, neutral pH, and high pH? a) 10_char Line HOC-CH-CH-CO- +NH, b) ._ança do OC-CH-CH-CO- NH2 HOC-CH.CH +NH
What is the [OH-] for a solution at 25°C that has [H30+1 = 1.15 x 10-4 M? Multiple Choice О 0.869 10-10 M O 1.26 10-10 M None of these choices are correct. О 1.26 x 10-5 M 0.869 x 10-15 M
Suppose that a benzoic acid (C,H,COOH) solution has a pH of 3.15. Which of these substances would increase the pH of the solution? OKI O NaBr OCH COONa OHCI
Which amino acid has a net charge of “+ 0.09” at pH 7? Show all calculations. Draw the structure of the amino acid that would predominate at this pH. (The answer should be Histindine; draw the structure of histidine. Calculate the net charge using a H-H equation. Please walk through every single step as if I was five years old I am very confused).
7. Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 M butyric acid has a pH of 2.71. What is the Ka for the acid? A. 0.36 B. 2.4 x 10-2 C. 7.8 x 10-3 D. 1.5 x 10-5 E. None of these choices are correct. 8. Lactic acid has a pKa of 3.08. What is the approximate degree of dissociation of a 0.35 M solution of lactic acid? A. 1.1% B. 2.2% C. 4.8%...
M. 7. What is true about the pH of a solution with a hydrogen ion concentration of 7.3 x 10 The pH is 3.7 and is acidic. The pH is 8.1 and has excess H in solution. 73000 Bongo C. The pH is 8.1 and has excess OH' in solution. d. The pH is 9.0 and it is basic. e. None of the above answers are correct. A water solution that accumulates CO2 gas will have a tendency to a....
eda 17, what is the pOH ofa 0.0077 M KOH solution? A. 9.13 B. None of these choices is correct. ROK C. 11.89 D. 4.87 18. What is the [O1I] for a solution at 25°C that has [Hs0]- 1.22 x 103 M? A. 8.20E-5 M B. 8.20E-12 M C. 1.22E-11 M D. None of these choices is correct. E. 1.22E-17 M 19. What is the pH of a 0.30 M solution of NHC1? [Kb(NHs) 1.8 x 10-1 A. 4.63 B....