C5.1.6 - Titration Calculations

Question 1

What do you learn from a titration?

Answer 1

The two reactants used
The volume and concentration of one of the reactants
Just the volume of the other reactant

Question 2

What are the two titration calculations you need to know?

Answer 2

Sodium hydroxide solution titration with dilute hydrochloric acid
Sodium hydroxide solution titration with dilute sulphuric acid

Question 3

If 25cm3 of 0.100mol/dm3 sodium hydroxide solution was titrated with dilute hydrochloric acid, with the mean titre as 20cm3, calculate the concentration of the acid.

Answer 3

0. 100mol/dm3 * 0.025dm3 = 0.0025mol

0. 0025mol / 0.020dm3 = 0.125mol/dm3

Question 4

If 25cm3 of 0.400mol/dm3 sodium hydroxide solution was titrated with dilute sulfuric acid, with the mean titre as 10cm3, calculate the concentration of the acid.

Answer 4

0. 400mol/dm3 * 0.025dm3 = 0.010mol
1. 010mol / 2 = 0.0050mol
2. 0050mol / 0.010dm3 = 0.5mol/dm3