Exam 2 lecture Flashcards
(27 cards)
what is the atomic mass?
the mass of an atom in atomic mass units (amu)
how much does 1 atom of 12C weigh?
12 amu
what information would you need to calculate the average atomic mass of an element?
the atomic mass and atomic number
what is a mole?
the amount of a substance that contains as many elementary entities as there are atoms in exactly 12.00 grams of 12C
what does the mole have in common with the pair, the dozen and the gross?
they are all units of measurement
what does Avogardo’s number represent?
the numbers of atoms or molecules in a mole
what is Avogardo’s equation?
6.022 X 10^23
common strong acids (6) (HHHNSP)
1) hydrochloric acid (HCl)
2) hydrobromic acid (HBr)
3) Hydroiodic acid (HI)
4) nitric acid (HNO3)
5) sufuric acid (H2SO4)
6) perchloric acid (HClO4)
common weak acids (4) (HNPA)
1) hydrofluoric acid (HF)
2) nitrous acid (HNO2)
3) phosphoric acid (H3PO4)
4) acetic acid (CH3COOH)
common strong bases
1) sodium hydroxide (NaOH)
2) potassium hydroxide (KOH)
3) barium hydroxide Ba(OH)2
4) calcium hydroxide Ca(OH)2
is nitrate (NO-3) soluble?
yes with no exceptions
is CH3CO2 soluble?
yes with the exception of Ag+
is chlorideg soluble?
yes with the exception of Ag+, Pb2+, and Hg 2+2
is bromide or iodide soluble?
yes with the exception of Ag+, Pb2+, Hg2+2, Hg2+
is sulfate soluble (SO2-4)
yes with the exception of Ag+, Pb2+, Hg2+2, Ca2+, Ba2+
is carbonate (CO2-3) soluble?
no with the exception of 1A metals and NH+4
is oxygen (O2), sulfide (S2-), or hydroxide (OH) soluble?
no with the exception of 1A metals and NH+4
when picking up a proton what is that considered for Bron and Arrh?
a base for Bron and nothing for Arrh
when giving up a proton what is that considered for Bron and Arrh?
an acid
what is a OH (hydroxide) considered for Bron and Arrh?
a base
what must a Arrh base have?
a hydroxide (OH)
what is a bron acid known as?
a proton donor
what is a bron base known as?
a proton acceptor
what must a bron acid contain at least one of?
an ionizable proton
