U1-3-6 - Volumetric Titration

Question 1

Colour of phenolphthalein in acidic and neutral solutions

Answer 1

Colourless

NOT clear!

Question 2

Colour of phenolphthalein in alkaline solutions

Answer 2

Pink

Question 3

A solution of accurately known concentration

Answer 3

Standard solution

Question 4

What is the point of titration?

Answer 4

To find out an unknown concentration by reacting a sample with a standard solution.

Question 5

During a titration, what tells you the reaction is finished?

Answer 5

The first permanent colour change

Question 6

What is a titre?

Answer 6

Volume of solution added from the burette during a titration.

Question 7

What are concordant titres?

Answer 7

Titres within 0.2 cm³ of each other.

Question 8

Name this piece of apparatus

Answer 8

Pipette

Question 9

Name this piece of apparatus

Answer 9

Burette

Question 10

Titres within 0.2 cm³ of each other are called ….

Answer 10

concordant.

Question 11

What is c₁ and c₂?

Answer 11

Concentrations of acid and base used in a titration.

Question 12

What is V₁ and V₂?

Answer 12

Volumes of acid and base used in a titration.

Units must match, e.g. both in litres or both in cm³.

Question 13

What is n₁ and n₂?

Answer 13

Number of moles of acid and base from the balanced equation.

Question 14

Standard solution

Answer 14

A solution of accurately known concentration