chemistry gcse- acids and alkalis (1)

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  • Created by: mel
  • Created on: 24-08-12 08:05

Acids

Defenition: When a substance dissolves in water, the solution may be acidic, neutral or alkaline.

Examples:  

The three common acids you will find in the laboratory are;

Hydrochloric acid - HCl(aq), Nitric acid - HNO3(aq)
and Sulfuric acid - H2SO4(aq)

They are all strong acids - seepH.
They all ionise (make ions) in waterforming
hydrogen ions (H+ions). This is what makes them acids.


Hydrochloric acid
H
Cl(aq) arrow (http://www.gcsescience.com/arrow.gif) H+(aq) + Cl-(aq)


Nitric acid
H
NO3(aq) arrow (http://www.gcsescience.com/arrow.gif) H+(aq) + NO3-(aq)


Sulfuric acid
H2
SO4(aq) arrow (http://www.gcsescience.com/arrow.gif) H+(aq) + HSO4-(aq)


These three acids

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