C5.1.5 - Titrations

Question 1

What is a titration?

Answer 1

An experiment to see how much alkali/acid is needed to change pH of the other

Question 2

Describe how you would perform a titration.

Answer 2

You add a bit of alkali to the conical flask. Then, add a few drops of universal indicator to the alkali. Then, slowly add acid to the alkali slowly using a burette. When the alkali is neutralised and the indicator changes colour, stop adding acid.

Question 3

Describe how you could make a titration experiment more accurate.

Answer 3

Use a volumetric pipette instead of a measuring cylinder as it is more accurate
Clamp the burette vertically for more accurate readings

Question 4

What is a titre?

Answer 4

The difference between the initial burette reading and the final burette reading (amount of acid used)

Question 5

What are concordat titres?

Answer 5

Titres that are within 0.1cm^3 of each other

Question 6

How do you calculate a mean titre?

Answer 6

Add the 2 concordant titres and divide by 2

Question 7

What might you do to obtain a repeatable titre?

Answer 7

Swirl the flask during the titration to mix the contents

Do a rough run first to roughly check where the titre will be

Question 8

What is the meniscus?

Answer 8

The curve seen at the top of a liquid in response to its container