126-150 ways to pass the regents

A_____in temperature shifts an equilibrium system in the _____direction

decrease, exothermic

____ the pressure on a gaseous equilibrium will shift the equilibrium point

toward the side with_____ of gas.

increasing, fewer moles

decreasing the pressure on a gaseous equilibrium will shift the equilibrium point

toward the side with______ of gas.

more moles

Catalysts have ______ on an equilibrium. It just establishes itself quicker.

no effect

_____ (H) is the heat energy gained or lost in a reaction.

enthalpy

_____ (S) is high in a highly unorganized system, such as a gas, a messy room,

etc.

entropy

For the hypothetical____ wA + xB  yC + zD ,

Keq = [C]y[D]z/[A]W[B]x

reaction

Oxidation is the _____ by an atom or ion. The oxidation number

increases as a result. The electrons are on the ____ of the reaction arrow.

loss of electrons, right side

Reduction is the ______ by an atom or ion. The oxidation number

decreases (is reduced!) as a result. The electrons are on the _____ of the

reaction arrow.

gain of electrons, left side

Redox reactions always involve the exchange of _____

electrons

Identify redox reactions by seeking an______ element on one side of a

reaction that is in a______ on the other side. (Zn + 2HCl  ZnCl2 + H2)

uncombined, compound

Oxidizing agents are what get_____ in a redox reaction.

Reducing agents are what get ______in a redox reaction.

reduced, oxidized

Electrochemical cells produce electricity with a ______redox reaction.

spontaneous

The ______ is usually the site of oxidation in an electrochemical cell

diagram.

left electrode

In electrochemical cells…..

the anode gets oxidized and reduction occurs at the cathode

______ use an applied electrical current to force a nonspontaneous

redox reaction to take place

electrolytic cells

Electrolytic cells are usually used for _____ of objects.

metal plating

_______ are both good electrolytes. Their solutions conduct electricity

well.

acids and bases

_______ taste sour.

weak acids

______ taste bitter.

weak bases

Acids and bases turn ______ different colors. They’re listed on Table M.

indicators

Acids have a pH ____

<7

Bases have a pH_____

> 7

________ list names and formulas of common acids and bases asked about

on the Regents.

Tables K & L