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General Formula

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Key Stage 4

Meaning

A general formula is a way to represent the the ratio of atoms in a homologous series.

About General Fromulae

General formulae allow Chemists to predict the number of one type of atom in a compound using the number of another atom.

The general formulae you should know:

Alkanes - C_nH_2n+2
Alkenes - C_nH_2n
Alcohols - C_nH_2n+2O
Carboxylic Acids - C_nH_2nO₂

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