Download presentation
Presentation is loading. Please wait.
1
Ch. 15 & 16 - Acids & Bases II. pH (p ) C. Johannesson
2
H2O + H2O H3O+ + OH- Kw = [H3O+][OH-] = 1.0 10-14
A. Ionization of Water H2O + H2O H3O+ + OH- Kw = [H3O+][OH-] = 1.0 10-14 C. Johannesson
![H2O + H2O H3O+ + OH- Kw = [H3O+][OH-] = 1.0 10-14](http://slideplayer.com./slide/15336844/92/images/2/H2O+%2B+H2O+H3O%2B+%2B+OH-+Kw+%3D+%5BH3O%2B%5D%5BOH-%5D+%3D+1.0+%EF%82%B4+10-14.jpg "A. Ionization of Water. H2O + H2O H3O+ + OH- Kw = [H3O+][OH-] = 1.0 C. Johannesson.")
3
A. Ionization of Water Find the hydroxide ion concentration of 3.0 10-2 M HCl. [H3O+][OH-] = 1.0 10-14 [3.0 10-2][OH-] = 1.0 10-14 [OH-] = 3.3 M Acidic or basic? Acidic C. Johannesson
![A. Ionization of Water Find the hydroxide ion concentration of 3.0 10-2 M HCl. [H3O+][OH-] = 1.0 ](http://slideplayer.com./slide/15336844/92/images/3/A.+Ionization+of+Water+Find+the+hydroxide+ion+concentration+of+3.0+%EF%82%B4+10-2+M+HCl.+%5BH3O%2B%5D%5BOH-%5D+%3D+1.0+%EF%82%B4.jpg "[3.0 10-2][OH-] = 1.0 [OH-] = 3.3 M. Acidic or basic Acidic. C. Johannesson.")
4
pouvoir hydrogène (Fr.)
B. pH Scale 14 7 INCREASING ACIDITY INCREASING BASICITY NEUTRAL pH = -log[H3O+] pouvoir hydrogène (Fr.) “hydrogen power” C. Johannesson
5
pH of Common Substances
B. pH Scale pH of Common Substances C. Johannesson
6
pH = -log[H3O+] pOH = -log[OH-] pH + pOH = 14
B. pH Scale pH = -log[H3O+] pOH = -log[OH-] pH + pOH = 14 C. Johannesson
![pH = -log[H3O+] pOH = -log[OH-] pH + pOH = 14](http://slideplayer.com./slide/15336844/92/images/6/pH+%3D+-log%5BH3O%2B%5D+pOH+%3D+-log%5BOH-%5D+pH+%2B+pOH+%3D+14.jpg "B. pH Scale. pH = -log[H3O+] pOH = -log[OH-] pH + pOH = 14. C. Johannesson.")
7
B. pH Scale What is the pH of 0.050 M HNO3? pH = -log[H3O+]
Acidic or basic? Acidic C. Johannesson
![B. pH Scale What is the pH of M HNO3 pH = -log[H3O+]](http://slideplayer.com./slide/15336844/92/images/7/B.+pH+Scale+What+is+the+pH+of+M+HNO3+pH+%3D+-log%5BH3O%2B%5D.jpg "Acidic or basic Acidic. C. Johannesson.")
8
B. pH Scale What is the molarity of HBr in a solution that has a pOH of 9.6? pH + pOH = 14 pH = 14 pH = 4.4 pH = -log[H3O+] 4.4 = -log[H3O+] -4.4 = log[H3O+] [H3O+] = 4.0 10-5 M HBr Acidic C. Johannesson
Similar presentations
![Acids and Bases. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14.](/8/2465222/big_thumb.jpg "Acids and Bases. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14.>")
![Calculating pH and pOH. pH pH = - log [H + ] [H + ] = the hydrogen ion concentration pH: “potential of hydrogen” - A way of expressing the hydrogen ion.](/17/5302527/big_thumb.jpg "Calculating pH and pOH. pH pH = - log [H + ] [H + ] = the hydrogen ion concentration pH: “potential of hydrogen” - A way of expressing the hydrogen ion.>")
![C. Johannesson Ch. 18- Acids & Bases II. pH. C. Johannesson A. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14.](/28/9367926/big_thumb.jpg "C. Johannesson Ch. 18- Acids & Bases II. pH. C. Johannesson A. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14.>")
![Let’s take a look at water 2H 2 O H 3 O + + OH - [H 3 O + ][OH - ]= 1x10 -14 M 2 [H 3 O + ]= 1x10 -7 M [OH - ]= 1x10 -7 M K w = 1x10 -14 M.](/29/9490611/big_thumb.jpg "Let’s take a look at water 2H 2 O H 3 O + + OH - [H 3 O + ][OH - ]= 1x10 -14 M 2 [H 3 O + ]= 1x10 -7 M [OH - ]= 1x10 -7 M K w = 1x10 -14 M.>")
![Acids & Bases pH. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14 Kw=ionization constant for H2O.](/32/9916554/big_thumb.jpg "Acids & Bases pH. Ionization of Water H 2 O + H 2 O H 3 O + + OH - K w = [H 3 O + ][OH - ] = 1.0 10 -14 Kw=ionization constant for H2O.>")
![ pH: The negative of the common logarithm of the hydronium ion concentration [H 3 O + ] ◦ pH stands for the French words pouvoir hydrogene, meaning “hydrogen.](/32/10002664/big_thumb.jpg " pH: The negative of the common logarithm of the hydronium ion concentration [H 3 O + ] ◦ pH stands for the French words pouvoir hydrogene, meaning “hydrogen.>")
