Term
| Acid dissociation constant |
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Definition
| the ration of the concentration of the dissociated form of an acid to the undissociated form; stronger acids have larger values than weaker acids |
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Definition
| any solution in which the hydrogen-ion concentration is greater than the hydroxide-ion concentration |
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Definition
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Definition
| a substance that can act as both an acid and a base |
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Term
| Base dissociation constant |
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Definition
| the ratio of the concentration of the conjugate acid times the concentration of the hydroxide ion to the concentration of the base |
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Definition
| any solution in which the hydroxide-ion concentration is greater than the hydrogen-ion concentraion |
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Term
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Definition
| a solution in which the pH remains relatively constant when small amounts of acid or base are added; a buffer can be either a solution of a weak acid and the salt of a weak acid or a solution of a weak base with the salt of a weak base |
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Definition
| a measure of the amount of acid or base that may be added to a buffer solution before a significant change in pH occurs |
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Definition
| the particle formed when a base gains a hydrogen ion; NH4+ is the conjugate acid of the base NH3 |
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Definition
| two substances that are related by the loss or gain of a single hydrogen ion; ammonia (NH3) and the ammonium ion (NH4+) are a conjugate acid-base pair |
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Definition
| the particle that remains when an acid has donated a hydrogen ion; OH- is the conjugate base of the acid water |
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Definition
| any acid that contains two ionizable protons (hydrogen ions); sulfuric acid (H2SO4) is a diprotic acid |
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Definition
| the point in a titration at which the indicator changes color |
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Term
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Definition
| the point in a titration where the number of moles of hydrogen ions equals the number of moles of hydroxide ions |
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Term
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Definition
| the positive ion formed when a water molecule loses a hydrogen ion |
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Term
| Ion-product constant for water |
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Definition
| the product of the concentrations of hydrogen ions and hydroxide ions in water; it is 1x10^-14 at 25°C |
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