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19 & 18.3
chem
| Question | Answer |
|---|---|
| acid dissociation constant | indicates the strength of the acid, the larger the stronger |
| base dissociation constant | indicates the strength of the base, the larger the stronger |
| buffer | a mix that is able to release or absorb H ions keeping the solution pH constant |
| buffer capacity | the amount of acid or base a buffer can neutralize depends on the concentrations of the buffer component |
| salt hydrolysis reaction | chem reaction bw water and ions of a dissolved salt |
| weak acid+conjugate salt= | buffer |
| oxidation | loss of electrons by a substance |
| reduction | gain of electrons |
| Redox Reactions | chem process of elements changing oxidation number |
| oxidizing agent | causes the oxidation of another substance by accepting electrons |
| reducing agent | causes the reduction of another substance by providing electrons |
| oxidation # | a # assigned to an element in a molecule to show distributions of electrons |
| disproportionation | a substance that undergoes oxidation and reduction |
| which reaction never is redox? | double displacement |
| which reaction is always redox? | single displacement and combustions |