Formulas Flashcards
Ka
Prod
Reacts
Acid ionization constant
Smaller value=weaker acid
To find strength of acid & whether p or r favoured at equilibrium
Only uses aqueous don’t use powers
Kb
Base ionization constant
Smaller value=weaker base
The one that ends in OH is always the stronger base
Prod
Reacts
To find strength of base &I if p or r favour at equil
pH
Percent of hydrogen
-log(H)
To find H+ pH and strength of acid
pOH
Percent hydroxide
-log(OH)
To find pOH and strength of base
Kw
Kw=prod1xprod2
Conc.of p over conc. of r’s
Kw=1.0x10-14(power)
When:
H=OH
H>oh
H
Neutral
Acidic
Basic
0-7 is acidic
7 is neutral
8-14 is basic
Ex. Stomach acid
Ex. Water
Ex. Hand soap
Use kW when missing concentrations
Ex. 1x10-14=[h][oh aka8.2x10-6]
H= 1.22x10-9M
Ask about units
?
POH +ph=14
Higher oh lower h vice versa
14-ph determine pOH
14-pOH determine ph
Answer
Equivalence
At midpoint int of straight vertical part of graph end point
MaVa=MbVb
When 3 given and one missing
Determine missing variable
If mol arty is calculated ph or pOH can be determined
Bro stead Lowry
Protons
AD
BA
Lewis
Electrons
AA
BD
CO2 is always Lewis acid