Titration And Calculations

Question 1

What do you use a titration experiment for?

Answer 1

To find out how much alkali you need to neutralise an acid (or vice versa)

Question 2

How is a titration experiment carried out?

Answer 2

Put some alkali in a flask, along with some indicator (phenolphthalein or methyl orange).
Using a burette add the acid to the alkali, a drop at a time.
Keep regularly mixing the flask.
The indicator will change colour when all the alkali has been neutralised.
Then record the amount of acid used to neutralise the alkali.

Question 3

What colour do both the indicators go when all the alkali has been neutralised?

Answer 3

Phenolphthalein is pink in alkali but colourless in acids.

Methyl orange is yellow in alkali but red in acids.

Question 4

What is volume measured in, in titration calculations?

Answer 4

Dm’3’

To convert cm’3’ to dm’3’ divide by 1000.

Question 5

What is the equation needed for titration calculations for mol/dm?

Answer 5

Concentration = mole ➗ volume

Question 6

What is the equation needed for titration calculations for grams?

Answer 6

Number of moles = mass ➗ relative formula mass

Question 7

How is concentration measured?

Answer 7

Moles(or grams) per dm’2’