Daily Quiz AB 1. 1.What does an acid do? a.Give away H + b.Take H + c.Give away OH - d.Take OH -...
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Daily Quiz – AB 1
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2.A base can do any of the following except: a.Take H + b.Give away OH - c.Take OH - Daily Quiz – AB 1
Transcript of Daily Quiz AB 1. 1.What does an acid do? a.Give away H + b.Take H + c.Give away OH - d.Take OH -...
Daily Quiz – AB 1
1. What does an acid do?a. Give away H+
b. Take H+
c. Give away OH-
d. Take OH-
Daily Quiz – AB 1
2. A base can do any of the following except: a. Take H+
b. Give away OH-
c. Take OH-
Daily Quiz – AB 1
3. Bronstead-Lowrey bases usually contain:a. carbonb. nitrogenc. oxygend. silicon
Daily Quiz – AB 1
4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from?a. airb. waterc. ammoniad. there is no oxygen
Daily Quiz – AB 1
1. What does an acid do?a. Give away H+
b. Take H+
c. Give away OH-
d. Take OH-
Daily Quiz – AB 1
1. What does an acid do?a. Give away H+
b. Take H+
c. Give away OH-
d. Take OH-
Daily Quiz – AB 1
2. A base can do any of the following except: a. Take H+
b. Give away OH-
c. Take OH-
Daily Quiz – AB 1
2. A base can do any of the following except: a. Take H+
b. Give away OH-
c. Take OH-
Daily Quiz – AB 1
3. Bronstead-Lowrey bases usually contain:a. carbonb. nitrogenc. oxygend. silicon
Daily Quiz – AB 1
3. Bronstead-Lowrey bases usually contain:a. carbonb. nitrogenc. oxygend. silicon
Daily Quiz – AB 1
4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from?a. airb. waterc. ammoniad. there is no oxygen
Daily Quiz – AB 1
4. Adding ammonia (NH3) to water increases [OH-]. Where does the oxygen come from?a. airb. waterc. ammoniad. there is no oxygen
Daily Quiz – AB 1
What is the acid ionization constant for water?
H2O
H2O
H2O
H2O ↔ H+ + OH-
H2O
H2O ↔ H+ + OH-
[OH-] [H+]Ka = ------------------
[H2O]
H2O
H2O ↔ H+ + OH-
[OH-] [H+]Ka = ------------------
[H2O]
H2O
H2O ↔ H+ + OH-
[OH-] [H+]Ka = ------------------
[H2O]
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
[OH-] [H+]Kw = ------------------
[H2O]
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
Kw = [OH-] [H+]
= (1.0 x 10-7) (1.0 x 10-7)
= 1.0 x 10-14
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
Kw = [OH-] [H+]
= (1.0 x 10-7) (1.0 x 10-7)
= 1.0 x 10-14
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
Kw = [OH-] [H+]
= 1.0 x 10-14
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
Kw = [OH-] [H+]
= 1.0 x 10-14
Ionization Constant of Water (Kw)
H2O ↔ H+ + OH-
Kw = [OH-] [H+]
= 1.0 x 10-14
This is always true under standard conditions (298oK).
So what?
So what?So…
So what?So…if the H+ ion concentration of an aqueous solution is 1.0 x 10-5 M, what is the OH- concentration?
So what?So…if the H+ ion concentration of an aqueous solution is 1.0 x 10-5 M, what is the OH- concentration?
Is the solution acidic or basic?
So what?Kw = [OH-] [H+]
So what?Kw = [OH-] [H+]
(1.0 x 10-14) = [OH-] (1.0 x 10-5)
So what?Kw = [OH-] [H+]
(1.0 x 10-14) = [OH-] (1.0 x 10-5)
(1.0 x 10-14) ----------------- = [OH-]
(1.0 x 10-5)
So what?Kw = [OH-] [H+]
(1.0 x 10-14) = [OH-] (1.0 x 10-5)
(1.0 x 10-14) 1.0 x 10-9 = [OH-]
Is the solution acidic or basic?
Kw = [OH-] [H+]
(1.0 x 10-14) = [OH-] (1.0 x 10-5)
(1.0 x 10-14) 1.0 x 10-9 = [OH-]
Is the solution acidic or basic?
We were told: 1.0 x 10-5 = [H+]
Is the solution acidic or basic?
We were told: 1.0 x 10-5 = [H+]
We calculated: 1.0 x 10-9 = [OH-]
Is the solution acidic or basic?
We were told: 1.0 x 10-5 = [H+]
We calculated: 1.0 x 10-9 = [OH-]
[H] > [OH-]
Is the solution acidic or basic?
We were told: 1.0 x 10-5 = [H+]
We calculated: 1.0 x 10-9 = [OH-]
[H] > [OH-]
It is acidic.
Homework:Read pages 608-609Do problem 18
