Answer :
The empirical formula is [tex]K_{2} Cr_{2} O_{7}[/tex], Potassium dichromate, which is a precipitate.
When two solutions are combined, a precipitation process occurs, producing an insoluble substance called a precipitate. A reddish precipitate of silver dichromate is created when a colorless solution of silver nitrate is combined with a yellow-orange solution of potassium dichromate.
[tex]AgNO_{3} + K_{2} CrO_{4} - > K_{2} Cr_{2} O_{7} (precipitate)[/tex]
Silver Nitrate + Potassium Chromate -> Potassium Dichromate
Thus, when one of the products is insoluble, precipitation reactions, a subclass of exchange reactions, take place between ionic compounds. Such reactions are commonly referred to as double-displacement reactions since both components of each molecule shift partners. Metals that have been extracted from their ores and precious metals that can be recovered for recycling are separated using precipitation reactions.
When two strong electrolyte solutions are combined, a precipitation process happens, and a solid precipitate forms. As previously mentioned, no net reaction will occur if none of the species in the solution react.
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