The formula equation for any reaction is the chemical equation which involves the chemical formulas of the element(s) or compound(s) involved in the reaction. On the left side of the [tex]\rightarrow[/tex], reactants are written and different reactants are separated by [tex]+[/tex] sign whereas on the right side of the [tex]\rightarrow[/tex], products are written and different products are separated by [tex]+[/tex] sign. The phases (solid, liquid, or gas) of all the reactants and products are written in brackets after the chemical formula of respective reactants and products.
The formula for fluorine gas is [tex]F_2 (g)[/tex], acts as reactant.
The formula for calcium metal is [tex]Ca(s)[/tex], acts as reactant.
The formula for calcium fluoride is [tex]CaF_2 (s)[/tex], acts as product.
The reaction is written as:
[tex]F_2 (g)[/tex] [tex]+[/tex] [tex]Ca (s)[/tex] [tex]\rightarrow[/tex] [tex]CaF_2 (s)[/tex]
Hence, the formula equation for the reaction is:
[tex]F_2 (g)[/tex] [tex]+[/tex] [tex]Ca (s)[/tex] [tex]\rightarrow[/tex] [tex]CaF_2 (s)[/tex]
