Acids And Alkalis

Question 1

Hydroxide ions are released when

Answer 1

Alkalis dissolve in water

Question 2

When HCl dissolves in water it gives

Answer 2

Hydroxuim and chloride ions

Question 3

Define concentration

Answer 3

It’s a measured amount of a substance dissolved in a given volume of solution

Question 4

Concentration in g/dm3

Answer 4

Concentration in mol/dm3 x FM

Question 5

Titrations

Answer 5

They allow you to find out exactly how much acid is needed to neutralise a quantity of alkali and vice versa

Question 6

Describe a titration reaction

Answer 6

1. Using a pipette add some alkali to a conical flask along with two drops of indicator
2. Fill a burette with acid
3. Using the burette add the acid to the alkali a bit at a time and swirl the conical flakes regularly
4. Indicator changes colour when all the acid has been neutralised

Question 7

Hydrogen ions are released when

Answer 7

Acid dissolves in water