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CHEM 113- Unit 2
Question | Answer |
---|---|
(effect of K when) you multiply constituents in an equation by 2 | square K |
(effect of K when) opposite reaction | 1/K |
Kp= | Kc(RT)^(delta)n (moles gaseous product-moles gaseous reactant) |
check 5% | x/[A]initial |
when you use simplifying assumption | small K, large initial concentrations |
Le Chatlier's Principle | when a chemical system @ eq. is subjected to stress, it shifts away from the stress |
changes in pressure | higher= side w/ fewer moles lower= side w/ more moles |
effect (exothermic) when heat is added | K decreases |
effect (endothermic) when heat is added | K increases |
strong acids (6) | HCl, HBr, HI, HNO3, H2SO4, HClO4 |
nitric acid | HNO3 (strong) |
sulfuric acid | H2SO4 (strong) |
perchloric acid | HClO4 (strong) |
strong bases- 1A hydroxides | Li-Cs (OH) |
strong bases- heavy 2A hydroxides | Ca-Ba (OH)2 |
carboxylic acid | -COOH |
oxoacid | # O's> # ionizable protons |
hydrohalic acid | H+halogen |
ion-product constant | (Kw)=[H30+][OH-] (or [H20]^2) 1x10^-14 @ 25C |
pH | -log[H30+] |
pOH+pH | 14 (at 25C) |
conjugate acid-base pairs | differ by a single H+ (acid had 1 more) |
bronsted-lowry definition | acid= donates H+; base= accepts H+ |
stronger acids have a | larger Ka (they dissociate more) |
Arrhenius acid | ionizable H+ atoms |
Arrhenius base | OH- ions |
amphiprotic | can accept H+ and be a base, can donate H+ to act as an acid |