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Water, pH and Macromolecules

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

Theodor Kocher
Otto Warburg
Karl Hooper
Karl Landsteiner

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Water, pH and Macromolecules
The pH of a solution is determined by

concentration of salt
environmental effect
dielectric constant of the medium
relative concentration of acids and bases

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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
The strength of an acid depends on

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

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

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

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

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

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