NEUTRALISATION

CHEMISTRY

GROUP MEMBERS:

1. NOR BAIZURA BT MAHAT G 10284922. FARAH AYUNI BT RAMLY G 10230083. WAN NOR AZIERA BT WAN MUSTAFA G 1023164

LEARNING OUTCOMES:At the end of this lesson students will be able to :

1. Explain the meaning of neutralisation.2. Write equations for neutralisation reaction3. Explain the application of neutralisation in daily life

LEARNING OBJECTIVE:• Analysing neutralisation

CONT

ENT DEFINITION

EQUATIONS FOR NEUTRALISATION

REACTION

APPLICATION OF NEUTRALISATION IN

DAILY LIFE

X Y

Colourlesssolution

What happen if we put universal indicator?

Methyl orangesolution

X Y

X Y

Redish colour

Yellow colour

Can You predict what is solution x and solution Y ????

X Y

Redish colour

Yellow colour

ACID WATERSALTBASE+ +

OH

EQUATION FOR NEUTRALISATION

WHAT IS NEUTRALISATION :

Neutralisation is a reaction between acid andbase to produce salt and water.

DEFINATION

• HNO3 + Ca(OH)2

• H2SO4 + Ba(OH)2

• HCl + KOH

Answers:

+

+

+

2

APPLICATIONS OF NEUTRALISATIONS• Insect Stings Bee stings are acidic and can be neutralised with baking soda (bicarbonate of soda). Wasp stings are alkaline and can be neutralised with vinegar.

• Indigestion: Our stomach carries around hydrochloric acid. Too much of this leads to indigestion. To cure indigestion, you can neutralise the excess acid with baking soda or specialised indigestion tablets.

• Soil Treatment: When soils are too acidic (often as a result of acid rain) they can be treated with slaked lime, chalk or quicklime, all alkalis. Plants and crops grow best in neutral soils

Factory Waste: Liquid waste from factories is often acidic. If it reaches a river it will destroy and kill sea life of many forms. Neutralising the waste with slaked lime can prevent this.