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Water, pH and Macromolecules

Water, pH and Macromolecules
Which of the following organic groups are found in naturally occuring amino acids?

Indole
Guanidinium ion
Imidazole
All of these

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Water, pH and Macromolecules
A solution with pH = 5 is __________ than a solution with pH = 7.

10 times more acidic
10 times more basic
2 times more basic
100 times more acidic

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Water, pH and Macromolecules
Who discovered and described the blood groups (ABO) classification?

Karl Hooper
Theodor Kocher
Otto Warburg
Karl Landsteiner

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Water, pH and Macromolecules
What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7?

1 x 10-7
7 x 10-7
7
5 x 10-7

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Water, pH and Macromolecules
The dissociation constant of H2O at 25° C is

1014 M
107 M
10-7 M
10-14 M

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Water, pH and Macromolecules
The strength of an acid depends on

electronegativity
number of neutrons gain
number of double bonds
number of protons released

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