Core Practicals Chem

How to prepare a pure, dry sample of a soluble salt from an insoluble oxide or carbonate:

use magnesium oxide and sulfuric acid

- add sulfuric acid to a beaker 

-warm sulfuric acid

-add magnesium oxide and stir 

-continue adding until magnesium oxide is in excess

-filter using a filter paper and funnel to remove excess magnesium oxide

-heat solution in an evaporating basin to crystallisation point

-leave to crystallise and pat dry with filter paper

Neutralisation:

-acid in burette or flask

-alkali/sodium hydroxide or acid in burette or flask 

-volume of acid or alkali measured using the pipette 

-slow addition of indicator in flask

-white tile under the flask

- swirling/mixing until colour change of indicator / end point

-burette volume measured

The electrolysis of aqueous solutions using inert electrodes:

-use a measuring cylinder to add copper chloride solution into a…