[tex]COCl_2 + H_2O[/tex] → 2[tex]HCl + CO_2[/tex] is the balanced equation.
The Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that the total mass on the reactant side must be equal to the total mass on the product side.
While balancing a chemical reaction first balance the atoms of other elements and then in the end balance oxygen atoms.
Hence, [tex]COCl_2 + H_2O[/tex] → 2[tex]HCl + CO_2[/tex] is the balanced equation.
Learn more about the balanced chemical equation here:
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