Monday, February 27, 2012
Mon-Day 2
AP Chem - we discussed the auto-ionization of water, and the measured value of water's equilibrium constant, Kw, which at 298K is 10^-14, a miniscule value, showing that water is a non-electrolyte.
We then saw the relationship between [H+] and [OH-] in any aqueous solution. A convenient logarithmic system was developed to turn these miniscule concentration numbers into more tangible numbers, thus the pH scale was born.
We derived the pH + pOH = 14 formula for aqueous solutions at 298K.
We finished with a table showing how to quickly estimate pH from [H+] concentration values and vice versa.
We then saw the relationship between [H+] and [OH-] in any aqueous solution. A convenient logarithmic system was developed to turn these miniscule concentration numbers into more tangible numbers, thus the pH scale was born.
We derived the pH + pOH = 14 formula for aqueous solutions at 298K.
We finished with a table showing how to quickly estimate pH from [H+] concentration values and vice versa.
# posted by C @ 8:54 PM 
