BaCrO₄(s) + 2HCl(aq) → BaCl₂(aq) + H₂CrO₄(aq)
Here's a breakdown:
* BaCrO₄(s): Barium chromate is a solid, yellow compound.
* HCl(aq): Hydrochloric acid is a strong acid in aqueous solution.
* BaCl₂(aq): Barium chloride is a soluble, colorless salt.
* H₂CrO₄(aq): Chromic acid is a weak acid.
Explanation:
The reaction is a double displacement reaction. The barium (Ba²⁺) from barium chromate combines with the chloride ions (Cl⁻) from hydrochloric acid to form barium chloride (BaCl₂). The chromate ions (CrO₄²⁻) from barium chromate combine with hydrogen ions (H⁺) from hydrochloric acid to form chromic acid (H₂CrO₄).
Important Notes:
* Chromic acid is unstable in solution and can decompose to form dichromate ions (Cr₂O₇²⁻) and water (H₂O).
* The reaction is typically performed in a dilute solution of hydrochloric acid.
* The reaction is exothermic, meaning it releases heat.
Let me know if you have any more questions!
