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IPC ch23&25
test review
| Question | Answer |
|---|---|
| colloids | size of solute- 1 to 1000, solute particles DO NOT settle, can be seperated with special equipment |
| suspensions | size is greater than 1000 nm, particles settle WITH TIME, CAN be seperated by filtering |
| solutions | size is .01- 1.0 nm, solute particles DO NOT settle, CAN NOT be seperated by filtering |
| difference between solute and solvent | solute dissolves in solvent, while solvent is greatest component of solution |
| factors that affect the rate of dissolving | stirring, temperature, surface area |
| solubility of gases is affected by change of temp. by... | decreasing? |
| pH levels- 1 to 6 | acid |
| ph level 7 | neutral |
| ph level 8 to 14 | bases |
| Ex. 4- 6 on pH scale= | 100 times H+ ions |
| NaCl -> Na + Nl | 1, dissasociation |
| sugar | 4, nonelectrolyte |
| 2 H-lil2-0 <-> H-lil3-0 + OH | 2, equilibrium |
| Na -> Na + E | 3, ionization |
| NaNO3 solubility | steepest increase |
| KNO3 solubility | medium increase |
| NaCl solubility | no increase |