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Water, pH and Macromolecules

Water, pH and Macromolecules
Which of the following will easily dissolve in a polar solvent?

argon
sodium chloride
gasoline (heptanes & octanes)
methane

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

ions
none of these
molecules
acids

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

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

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

its conjugate acid
highly reactive
its conjugate base
a hydronium ion

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Water, pH and Macromolecules
The reason that fats contain more energy than simple sugars, is fats have many more

covalent bonds
carbon atoms
hydrogen atoms
hydrogen bonds

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

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

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