What is meant by the term chemical formula?

The chemical formula of a compound means the symbolic representation of the composition of a compound. Chemical formulae provide insight into the elements that constitute the molecules of a compound and also the ratio in which the atoms of these elements combine to form such molecules.

About chemical formulae

  • Chemical formulae provide insight into the chemical composition of a substance.
  • They also represent the ratios in which the constituent elements combine to form the compound.
  • The chemical formula of a compound is crucial while representing it in a chemical equation.
  • Chemical formulae can also be employed to represent ions, free radicals and other chemical species.

Example

The chemical formula of carbon dioxide is CO2, we come to know that one carbon atom and two oxygen atoms are chemically bonded together to form one molecule of the compound, carbon dioxide. A chemical formula denotes the number of various atoms present in the chemical compound.

Given below is a list of compounds with the formula

Serial Number Name of the compound Chemical formula
01 Water H2O
02 Sodium acetate C2H3NaO2
03 Hydrochloric acid HCl
04 Sodium hydroxide NaOH
05 Silver chloride AgCl
06 Magnesium carbonate MgCO3
07 Potassium sulfate K2SO4
08 Lead Nitrate Pb(NO3)2
09 Aluminium oxide Al2O3
10 Ethyl benzoate C9H10O2

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