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21 Cards in this Set
- Front
- Back
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a number that characterizes the strength of an acid |
acid dissociation constant |
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the amount of hydrogen ions released when given amount of acid is dissolved in water |
acid strength |
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a molecule with both polar (hydrophilic) and nonpolar (hydrophobic) portions |
amphipathic |
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something that resist change |
buffer |
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a solution that resists a change in pH on addition of moderate amounts of strong acid or strong base |
buffer solution |
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a measure of the amount of acid or base that reacts with a given buffer solution |
buffering capacity |
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bonds with positive and negative ends |
dipoles |
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a measure of the tendency of an atom to attract electrons to it in a chemical bond |
electronegativity |
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the point in the titration at which the acid is exactly neutralized |
equivalence point |
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a mathematical relationship between pka of an acid and the pH of a solution containing the acid and itls conjugate base |
Henderson-hasselbalch equation |
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a noncovalent association formed between the pka of an acid and the pH of a solution |
hydrogen bonding |
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tending to dissolve in water, a mark of ionic and polar substances |
hydrophilic |
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tending not to dissolve in water |
hydrophobic |
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attractions between molecules that are nonpolar; also called hydrophobic interactions |
hydrophobic bonds |
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interactions between nonpolar molecules |
hydrophobic interactions |
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a measure of the tendency of water to dissociate to give hydrogen ion and hydroxide ion |
ion product constant for water |
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bonds where the sharing of electrons in the bond is very nearly equal |
nonpolar |
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bonds with a partial positive and negative charge |
polar bonds |
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an experiment in which measured amounts of base are added to measured amount of acid |
titration |
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a noncovalent association based on the weak attraction of transient dipoles for one another; aslo called |
van der waals interaction |
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compounds that have both a positive charge and a negative charge |
zwitterions |
