UCSB CHEM 1B Final Exam (2026) Complete
Questions & Verified Correct Answers
Does K ever have units? - CORRECT ANSWER -No, always unitless
Manipulations of K:
reverse reaction: K --> _________
multiply the reaction by x: K --> ________
add two reactions: K1+K2 --> _______ - CORRECT ANSWER -reverse reaction: K --> 1/K
multiply the reaction by x: K --> K^x
add two reactions: K1+K2 --> K1*K2
Kp is unitless (divide by ______) - CORRECT ANSWER -1 atm
if no change in moles of gas, Kp ______ K (<,>,=) - CORRECT ANSWER -Kp = K
heterogeneous - CORRECT ANSWER -composed of different states of matter/phases
exclude the following 3 things from equilibrium constant K:
(replace with ____) - CORRECT ANSWER -1. pure solids
2. pure liquids
3. solvents in dilute solutions
(replace with 1)
for the reaction quotient (Q):
when K < Q, rxn shifts _______
when K > Q, rxn shifts _______
, when K = Q, rxn shifts _______ - CORRECT ANSWER -when K < Q, rxn shifts left
when K > Q, rxn shifts right
when K = Q, rxn does not shift (at equilibrium)
ICE tables use ______ (what units?) - CORRECT ANSWER -concentrations or pressures
small x method applies when K ___________ - CORRECT ANSWER -when K < 10^-3
in the small x method, x is only negligible when ____________ NOT ___________ - CORRECT
ANSWER -only when added or subtracted from initial, NOT when multiplied or standing alone
Adding H+ or OH- to a reaction will _________ existing H+ or OH- - CORRECT ANSWER -
neutralize/remove
The only way to change K is to change __________ - CORRECT ANSWER -temperature
When T increases and K increases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -right, endothermic
When T decreases and K decreases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -left, endothermic
When T increases and K decreases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -left, exothermic
When T decreases and K increases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -right, exothermic
Questions & Verified Correct Answers
Does K ever have units? - CORRECT ANSWER -No, always unitless
Manipulations of K:
reverse reaction: K --> _________
multiply the reaction by x: K --> ________
add two reactions: K1+K2 --> _______ - CORRECT ANSWER -reverse reaction: K --> 1/K
multiply the reaction by x: K --> K^x
add two reactions: K1+K2 --> K1*K2
Kp is unitless (divide by ______) - CORRECT ANSWER -1 atm
if no change in moles of gas, Kp ______ K (<,>,=) - CORRECT ANSWER -Kp = K
heterogeneous - CORRECT ANSWER -composed of different states of matter/phases
exclude the following 3 things from equilibrium constant K:
(replace with ____) - CORRECT ANSWER -1. pure solids
2. pure liquids
3. solvents in dilute solutions
(replace with 1)
for the reaction quotient (Q):
when K < Q, rxn shifts _______
when K > Q, rxn shifts _______
, when K = Q, rxn shifts _______ - CORRECT ANSWER -when K < Q, rxn shifts left
when K > Q, rxn shifts right
when K = Q, rxn does not shift (at equilibrium)
ICE tables use ______ (what units?) - CORRECT ANSWER -concentrations or pressures
small x method applies when K ___________ - CORRECT ANSWER -when K < 10^-3
in the small x method, x is only negligible when ____________ NOT ___________ - CORRECT
ANSWER -only when added or subtracted from initial, NOT when multiplied or standing alone
Adding H+ or OH- to a reaction will _________ existing H+ or OH- - CORRECT ANSWER -
neutralize/remove
The only way to change K is to change __________ - CORRECT ANSWER -temperature
When T increases and K increases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -right, endothermic
When T decreases and K decreases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -left, endothermic
When T increases and K decreases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -left, exothermic
When T decreases and K increases, the rxn shifts ___________ (left/right) and the rxn is
__________ (endo/exothermic) - CORRECT ANSWER -right, exothermic
