topic 6: Kw, Ka & Kb

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11 Terms

1
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what is the expression for acid dissociation constant Ka

Ka = [H+][A-] / [HA]

2
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what happens when the value of Ka is large?

the larger the value of Ka, the stronger the acid

3
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what happens when the value of Ka is small?

the smaller the value of Ka, the weaker the acid

4
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what is the expression of base dissociation constant Kb?

Kb = [BH+][OH-] / [B]

5
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what happens when the value of Kb is large?

the larger the value of Kb, the stronger the base

6
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what happens when the value of Ka is small?

the smaller the value of Kb, the weaker the base

7
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what is the ion product constant Kw?

Kw = [H+][OH-] = 1.0 × 10 power -14

8
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the value of Kw is constant at which temperature?

the value of Kw for any aqueous solution is constant at 25 degree

9
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how do we derive a neutral solution?

[H+] = [OH-] is a neutral solution

10
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how do we derive a acidic solution?

[H+] > [OH-] is a acidic solution

11
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how do we derive a basic solution?

[H+] < [OH-] is a basic solution