Titration

Question 1

What does a titration do?

Answer 1

Allows you to find out how much acid is needed to neutralise and akali , or vice versa.

Question 2

What can you use titration to work out?

Answer 2

Concentration

Question 3

Process:

Answer 3

Using a pipette, add a set volume of alkali into a conical flask.

Add two or three drop of indicators to the alkaline solution.

Using a funnel , fill a burette with an acid of an known concentration and record the initial volume.

Using the burette add little drops of the acid into the alkaline solution.

If you see a colour change, then the alkali has been neutralised.

Question 4

What is an indicator?

Answer 4

An indicator is something that estimate the pH of a solution by changing colours.

Question 5

What type of indicator do you use in titration?

Answer 5

A single indicator

Question 6

Name the three single indicators used in titration?

Answer 6

Phenolphthalein
Methyl Orange
Litmus

Question 7

Colour change in phenolphthalein

Answer 7

Pink in alkali
Colourless in acid

Question 8

Colour change in Litmus

Answer 8

Red in Acid
Blue in Alkali

Question 9

Colour change in methyl orange

Answer 9

Red in acid
Yellow in alkali