chem Flashcards
to know if things will precipiate you need to know the cpompunds
Ksp
what expression when there will be a precipitate
Q>Ksp
when a weak acid is titrated with NaOH in presence of indicator, the pH at which colour change is observed depends on
pKa of HIn – indicator will change colour over a specific pH range depend when HIn –> In- (NOT depend on the final con of HA, HIn, or initial con of HA)
1 F is equal to
1 mol of electric charge (forumale for when Al3+ gets reduced would be F/3)
when looking at electron affinity make sure to look at the equation too and compare
when looking at a gas at 1 atm is acts as a _____ gas and has/no volume
idea, no volume
when the pressure of gas increases 5000 atm from 1 atm now the volume is
not negligible and the space of occupied is more by indi gas molecules
if quanitity of a gas remain unchaged while temp increases what happen to volume
use PV=nRT - volume will inc if pressure remains constant
if atom in excited state - then electron configuration will show
one level up - skip 3p for example and go straight to 3d1
as atomic number increases in hor row ionization energy
increases bc of effective nuclear charge
formula for the Ecell
cathode - anode (can do minus minus if neg0
if 2 atoms are isoelectronic then they have the same number of
electrons
the solubility of any substance whose anion is basic will be _____ inc/dec in solutions of low ph
inc - cuz basic anion is consumed
with HCl – PbOH2 is the most basic anion OH- so it will show inc/dec solubility
inc
in copper electrolytic cell designed to produce copper - increase in which conditions will most effectively inc the rate at which copper produced
current of electricity
