Term
| when does a precipitate form? |
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Definition
| when the attractive forces between ions are large |
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Term
| what are the exceptions for I, Cl, and Br? |
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Definition
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Term
| what are the exceptions for SO4? |
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Definition
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Term
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Definition
| NH4, group 1A, NO3, ClO4, Clo3, C2H3O2 |
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Term
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Definition
| homogenous mixture of 2+ substances |
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Definition
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Definition
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Definition
| affected by concentration of particle the solute contirbutes to the solution |
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Term
| what are examples of colligative properties? |
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Definition
osmotic pressure
vapor pressure lowering
boiling point elevation
freezing point depression
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Term
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Definition
| change in freezing point or boiling point of a solvent when solute is added |
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Term
| what is the equation for colligative molality? (Mc) |
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Definition
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Term
| how do you find molality and what are the units? |
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Definition
| moles of solute / kg of solvent |
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Term
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Definition
| vant hoff factor; # of particles produced when a solute dissolves |
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Term
| what is the equation for delta T? |
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Definition
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Term
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Definition
| the freezing point depression constant of solvent |
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Term
| what are the properties of lauryl acid? |
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Definition
| non hazardous but prolonged contact may cause skin irritation |
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Term
| what equipment is used in experiemnt 8? |
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Definition
crystallization dish
graduated cylinder
beaker
thermometer
tongs
spatula
hot plate |
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Term
| when is equilibrium established? |
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Definition
| when the rates of the forward and reverse reactions are equal |
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Term
| what are the properties of HCl? |
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Definition
| corrosive, irritant, use fume hood, injures eyes and skin |
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Term
| what are the properties of AgNO3? |
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Definition
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Term
| what is the effect of raising temperature with respect to Le Chateliers principle? |
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Definition
| equilibirum shifts to the higher energy side |
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Term
| what are the reactions studied in experiment 9? |
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Definition
CoCl4^2- + 6 H2O -> Co(H2O)6^2+ + 4 Cl^-
Fe^3+ + SCN^- -> FeSCN^2+ |
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Term
| when are reactants favored? products? |
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Definition
when K is low
when K is high |
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Term
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Definition
| stoichiometric volume of one reactant of known concentration (titrant) is required to react with another reactant of unknown concentration (analyte) |
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Term
| how is the concentration of the analyte determined? |
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Definition
| from the concentration of the titrant and stoichiometry of reaction between them |
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Definition
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Term
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Definition
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Term
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Definition
| a substance that changes color near the equivalence point |
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Term
| how is an indicator chosen? |
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Definition
| when the equivalence point is near the end point |
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Term
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Definition
| point at which the color change occurs |
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Term
| what should you consider when setting up a titration? |
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Definition
buret measured to nearest .01 mL
make sure no air bubbles in buret tip
condition buret
fill buret below 0 mark
close stopcock |
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Term
| what happens if you dont condition the buret? |
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Definition
the volume of titrant will increase
the moles of analyte will be overestimated |
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Term
| what happens if you condition the flask with analyte? |
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Definition
increase in volume of titrant
overestimation of moles of analyte |
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Term
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Definition
| moles of acid / moles of base x 100 |
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Term
| how do u go from moles to mmol |
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Definition
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Term
| what is the difference when doing conjugates? |
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Definition
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Term
| conjugate base of an acid |
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Definition
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Term
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Definition
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Term
| what subsances are corrosive? |
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Definition
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Term
| what substances are irritants? |
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Definition
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Term
| how do u find [H3O+] given pH? |
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Definition
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Term
| how do u find pH given [H+] |
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Definition
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Term
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Definition
| amount of heat energy absorbed at constant pressure |
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Term
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Definition
| number of ways energy can be distributed in a system |
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Term
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Definition
| part of universe being studied |
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Term
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Definition
| part of universe that interacts with system being studied |
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Term
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Definition
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Term
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Definition
| amount of energy supplied to cause process to occur |
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Term
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Definition
| when reactants react completley at STP |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| allows ions to travel from one 1/2 cell to other |
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Term
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Definition
| calculates potential difference between oxidizing and reducing agents (mV -> V) |
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Term
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Definition
| Ecell = Ecathode - Eanode |
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Definition
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Definition
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