When dilute hydrochloric acid is added to silver nitrate solution, a white precipitate is formed. What is the chemical formula of this precipitate?
Correct: C
The reaction between dilute hydrochloric acid (HCl) and silver nitrate solution (AgNO₃) is a double displacement reaction:
HCl(aq) + AgNO₃(aq) → AgCl(s) + HNO₃(aq)
Silver chloride (AgCl) is an insoluble ionic compound, which forms the white precipitate. Nitric acid (HNO₃) remains dissolved in the solution.