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chem 2
| Question | Answer |
|---|---|
| oxidation-reduction (redox) | transfer of e- forming lower energy products (single replacement, synthesis, decomp) |
| acid base rxn | type of double replacement (acid + base ---> salt + water) |
| electrolytes | substances that conduct electricity when dissolved in water due to mobile hydrated ions. |
| ionic compound are ------ electrolytes | strong |
| most molecular compound are ------ electrolytes | non |
| in weak acid, strong base rxn, HF ----------- | =weak acid so stays togther in ionic equation |
| unstable in rxn: H2CO3 (carbonic acid) ----> | CO2 (g) + H2O(l) |
| unstable in rxn: H2SO3 (sulfurous acid) ------> | SO2 (g) + H2O(l) |
| unstable in rxn: NH4OH (ammonium hydroxide) -----> | NH3 (g) + H2O(l) |
| sum of OS in formula = | overall charge |
| redox rxns involve ------ | transfer of e- |
| oxidation = | one reactant looses e- and OS increases (0 --> +3) |
| reduction = | one reactant gains e- and OS decreases (0 --> -3) |
| heat flow @ constant pressure | qp |
| internal E | U |
| endo | absorb (+qp, +DH) |
| exo | release (-qp, -DH) |
| open system = ------ pressure | constant |
| for processes in a soln, heat absorbed or released by soln= and heat absorbed or released by rxn= | qsoln qp |
| heat flow @ constant volume | qv |
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