chem exam 3

parts per million

mass solute/mass solution x10^6

parts per billion

mass solute/mass solution x 10^9

pure water at 4 degrees celsius

1 L = 1kg 1 ppm = 1mg/L 1ppb=1microgram/L

concentration by percent

mass solute/ volume solution x10

always soluble

alkalai metals, ammonium, 1- oxyanions (NO3, ClO3, ClO4, C2H3O2)

alkalai metals + ammonium

always soluble

1- oxyanions (NO3, ClO3, ClO4, C2H3O2)

always soluble

Cl, Br, I

soluble except Ag, Pb, Hg

Sulfate (SO4)

soluble except Ag, Ca, Ba, Pb, Hg

strong bases

LiOH, NaOH, KOH, RbOH, CsOH, Ca(OH)2, Sr(OH)2, Ba(OH)2 - compounds which are soluble with hydroxide

OH- and S2-

insoluble unless alkalai metal, Ca, Sr, Ba

graham’s law

rate 1/rate 2 = sqrt(M2/M1)

Avogadro’s Law

if temperature and pressure are constant, the volume of a gas is proportional to the number of moles of gas present

Boyle’s law

PV=PV

Charle’s Law

V/T=V/T