Making soluble salts (Edexcel GCSE Chemistry): Flashcards

Used to make soluble salts

Avoid inhaling fumes & speed reaction

When base in excess (no more reacts)

Filter using filter paper & funnel

Heat to evaporate, cool, crystallise, filter, dry

Titration (Method 2)

Alkali & salt both soluble; would contaminate

Pipette

Burette

When indicator changes colour (neutralisation)

To make pure salt (avoid contamination)

Colour change too gradual

Pink → colourless

Red → yellow

$CuSO_4$ + $H_2O$