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general formula
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general formula

chemistry
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A general formula in chemistry is a way to represent an entire class of compounds. It uses symbols for elements and subscripts to show the relative number of atoms of each element, similar to an empirical formula. However, a general formula is specifically designed to apply to every member of a particular group of chemical compounds.

For example, the general formula CnH2n + 2 represents all paraffin hydrocarbons, also known as alkanes. In this formula, 'n' stands for any integer, indicating that the number of hydrogen atoms is always two more than twice the number of carbon atoms. This allows chemists to describe a vast number of related substances with a single expression.12

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