a neutralisation reaction is when a base reacts with an acid to form a salt and water
metal oxide + acid = salt + water
metal carbonate + acid = salt + water + carbon dioxide
when metal bases dissolve in water they form alkaline solutions
when non metal bases dissolve in water they form acidic solutions
a non metal oxide is formed when a reactive non metal recats with oxygen in the air
neutralising a solution takes place in 3 stages:
neutralisation reaction
filteration
evaporation & crystallisation
stage 1 neutralisation
A) metal oxide
B) heat
C) hot water
D) acid
E) stirring rod
stage 2 neutralisation
A) conical flask
B) filter paper
C) filter funnel
D) beaker
stage 3 neutralisation
A) evaporating dish
B) tripod stand
C) safety mat
D) heat
E) gauze
The disadvantage of the evaporation method is that the solvent is lost to the air. Therefore it should not be used if your solvent is harmful or flammable.
exact neutralisation of an acid or alkali is carried out by a technique called titration
