Indigestion,Neutralisation and Acids

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Acids can be neutralised using an alkali or base and used to make salts.
What are acids?
·       Corrosive
·       Irritant

All acids:
·       have a low pH (1-6) – the lower the number the stronger the acid
·       react with bases to form neutral compounds
·       are corrosive when they are strong
·       are an irritant when they are weak.
Indigestion remedies
Hydrochloric acid is used in the body to help digestion and kill bacteria.
However too much acid can cause indigestion and we use indigestion remedies to neutralise excess acids.
An indigestion remedy contains a base such as magnesium hydroxide, which reacts to form a neutral compound and raises the pH of the stomach.

You need to be able to describe the reactions of hydrochloric acid and sulfuric acid with metal hydroxides, metal oxides and metal carbonates.


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