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Water, pH and Macromolecules

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

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

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Water, pH and Macromolecules
H2O and CH4 are both examples of

molecules
none of these
ions
acids

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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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Water, pH and Macromolecules
A compound that is capable of forming hydrogen bonds with water

contains at least some polar covalent bonds
should act as a good buffer for acids and bases
does not dissolve well in water
is probably held together by noncovalent bonds

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Water, pH and Macromolecules
A Bronsted acid becomes __________ upon losing a proton.

highly reactive
a hydronium ion
its conjugate acid
its conjugate base

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Water, pH and Macromolecules
Which of the following alcohols would be most soluble in water?

butanol
ethanol
octanol
methanol

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