Additional Misses

Question 1

equilibrium constants: combining reactions (3)

Answer 1

(1) when a set of reactions adds up to an overall reaction, even if there is no reaction mechanism (2) the equilibrium constants for the set of reactions, multiplied together, are equal to the equilibrium constant for the overall reaction (3) compare with coupled reactions, which are the sum

Question 2

distilled water (2)

Answer 2

(1) the purest form of water, it is hydrogen and oxygen, with (2) 99.9% of minerals, pollutants, and impurities removed

Question 3

special conditions (3)

Answer 3

(1) when the reaction is at equilibrium, delta G = 0 and Q = K (2) when the reaction is under standard conditions, lnQ = 0, because Q = 1 bc all concentrations are 1 (3) leaving delta g naught equal to delta G

Question 4

units of Gibbs free energy

Answer 4

J or kJ (ie joules or kilojoules) per mole of reaction

Question 5

standard cell potential (5)

Answer 5

(1) designated E naught sub cell, this (2) aka standard cell voltage, is (3) the potential/voltage of an electrochemical cell when all reactants/products are in their standard states, (4) at a particular temperature; (5) for a galvanic/voltaic cell, this would be indicated by the reading on the voltmeter

Question 6

electrode (3)

Answer 6

(1) a metallic electrical conductor used to make contact (2) with a non metallic part of a circuit, (3) such as an electrolyte, semiconductor, vacuum, or air

Question 7

electrolysis, root words (2)

Answer 7

(1) “lysis” means to separate or break, so (2) electrolysis means to break up via electricity

Question 8

dimerization (2)

Answer 8

(1) the joining of two molecules or ions by bonds, (2) especially when the resulting chemical species is symmetrical

Question 9

basic concept of delta G naught and delta G (3)

Answer 9

(1) aka Gibbs free energy, this tells us that (2) reactions and processes are more likely to occur when they are exothermic, and (3) when entropy increases

Question 10

bond enthalpy (4-5)

Answer 10

(4) these values are always positive, bc energy is released when bonds are broken (5) this value is higher for double bonds than for single bonds

Question 11

caveat to delta H sub rxn, by standard enthalpies of formation equation (3)

Answer 11

(1) if value to solve for is kJ per mol o fcb product (2) the coefficient in front of the given product will be nothing (assumed 1) (3) so the other coefficients might end up being fractional