Chapter 18

Question 1

What is Kw?

Answer 1

Kw=[H+][0H-]

Question 2

What’s the pH?

Answer 2

pH=-log10[H+]

Question 3

What is a strong acid?

Answer 3

A good proton donor

Question 4

What is a weak acid?

Answer 4

A poor proton donor

Question 5

What is the acid dissociation constant?

Answer 5

Ka=[H+][A-]
———
[HA]

Question 6

How do you know an acid is a weak acid?

Answer 6

If the value of Ka is less than
-2
10

Question 7

Titrating and strong acid against a strong base

Answer 7

Strong Acid:HCl
Strong Base: NaOH
Starts:1
Jump:3-10
Indicator: Litmus, Methyl Orange, Phenolphthalein

Question 8

Titrating a strong acid against a weak base

Answer 8

Acid: HCL
Base: NH3
Starts:1
Jump:3-7
Indicator: Methyl Orange

Question 9

Titrating a weak acid against a strong base

Answer 9

Acid: CH3COOH
Base:NaOH
Start:3
Jump:7-11
Indicator: phenolphthalein