In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: What is the common ion ?Answer: Whenever a weak electrolyte and a strong electrolyte containing a ion are together in solution, the weak electrolyte ionizes less than if it were alone in solution. Question: Eg of common ion ?Answer: NaCN/HCN Question: What are ?Answer: solutions where pH can stay somewhat constant even if small amounts of strong acid or base are added. They common ion effect Question: What up a buffer?Answer: weak acid or base and its ion Question: Is Ch3COOH/CH3COO- a ?Answer: Question: Is NH4+/NH3 a ?Answer: Question: Is HCO3-/CO3(2-) a ?Answer: Question: IS HNO3/NO3- a ?Answer: no (HNO3 is a acid) Question: What are the two reasons that work?Answer: 1. added H+ is converted to HA by weak base A-.
2. OH- is converted to water by weak acid HA Question: What is ?Answer: determining a concencentration by reacting it with a of known concentration until an equivalence point is reached. Question: Titration of a weak acid and base has a pH of;Answer: 7 Question: of a strong acid with a weak base has a pH of:Answer: below Question: What does a pH look like for a polyprotic acid?Answer: pH jump for each H+ Question: Between what type of does a solubility equilibrium exist?Answer: between solid and solutions Question: What are the of soluability?Answer: g/L and mol/L Question: What is (S)?Answer: the max of solid to dissolve per litre of solution Question: soluability ____ as attractions between solute and solvent _____Answer: , increase Question: as pressure______ Sgas _____ but Ssolid is ______Answer: increases, , unchanged Question: as temperature _____ Sgas ______ but usually Ssolid_____Answer: increases, decreases, Question: generally, you can improve salt withAnswer: increasing Question: additional soluability for Ssalt:Answer: common ion effect of Ssalt. as Ssalt decreases if a ion is present in solution Question: For salts with basic anions, Ssalt ______ as pH ____ from 7 (gets more_____)Answer: increase, decrease, Question: For salts with acidic cations, Ssalt ____ as pH ___ from 7 (gets more ____)Answer: increase, increases, Question: What is ?Answer: the study of the relationship between reactions and electrical work (electricity) Question: What is ?Answer: loss of Question: What is ?Answer: gain of Question: What is the state of an atom?Answer: the the atom would have if all its bonds were considered ionic, and have any covalent pairs (of electrons) were deemed to belong to the more electronegative atom, sharing that pair. Question: What are reactions?Answer: involving a transfer of electrons from one reactant (one being oxidized) to another reactant (one being reduced) Question: the is being___Answer: oxidized Question: the oxidant is being _____Answer: Question: What is a (galvanic) cell?Answer: devices that use spontaneous redox reactions to do electrical work. ex. Question: What is an ?Answer: electrode where oxidation occurs, losing an e- to the wire. (-) Question: What is an ?Answer: electrode where reduction , gaining e- from the wire Question: What is ?Answer: the "potential of difference"(emf) of a voltaic Question: What are the conditions of standard cell potentialsAnswer: 1 atm for gas, 25*C, Question: What type of are voltages?Answer: Question: What is a ?Answer: one (or more) voltaic cells in series, without the wire Question: What is a lead-acid car ?Answer: 12V(six 2V cells) Question: What is an alkaline ?Answer: 1.5 V one cell (primary cell-not ) Question: What is a ion battery?Answer: 3.7 V cell(rechargeable) Question: What is a cell battery?Answer: 1.2 V, fuel continuously into cell Question: What is ?Answer: the study of transformations of . Question: What are the two parts of the ?Answer: system and Question: How does a process occur?Answer: naturally occurs without work required Question: What is a reverse ?Answer: idealized process that takes a system from state A to state B via infinitely changes, that could be reversed Question: What the spontaneous direction?Answer: The spontaneous is the direction of change that leads to more disorderly dispersal of total energy of the universe. Question: What is (S)?Answer: the degree of of energy dispersion Question: melting ____ the amount of entropy, freezing is the opposite.Answer: Question: What is a ?Answer: the state of each molecule in the Question: What is the definition of entropy?Answer: a measure of how many are associated with a particular microstatic state Question: Entropy is positive when fromAnswer: solid to liquid/gas and to gas Question: if S>0 of gas is>>Answer: >0 Question: entropy ____ with the dissolving of a saltAnswer: Question: Because of the 3rd law of , everything has a ___ entropy at temps above absolute zeroAnswer: positive |
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