Reactants: CoCl2 (aq, pink) and AgNO3 (aq, clear). Evidence: Lighter pink solution, silvery-white ppt. Net ionic: 2Cl− + Ag+ → AgCl. Reaction: Yes. Precipitation/double displacement.
The balanced chemical equation for the reaction between CoCl2 (aq, pink solution) and AgNO3 (aq, clear solution).
Reactants:
CoCl2 (aq, pink solution)
AgNO3 (aq, clear solution)
Molecular equation:
CoCl2 (aq) + 2AgNO3 (aq) → Co(NO3)2 (aq) + 2AgCl (s)
Complete ionic equation:
Co²⁺ (aq) + 2Cl⁻ (aq) + 2Ag⁺ (aq) + 2NO₃⁻ (aq) → Co²⁺ (aq) + 2NO₃⁻ (aq) + 2AgCl (s)
Net ionic equation:
2Ag⁺ (aq) + 2Cl⁻ (aq) → 2AgCl (s)
Formulas of the possible products:
Co(NO3)2 (aq)
AgCl (s)
Observation (visual):
lighter pink solution - silvery white ppt
Evidence of reaction (proof):
lighter pink solution - silvery white ppt
Spectator ions: Co²⁺, NO₃⁻
Reacting ions: Ag⁺Cl⁻
Did the reaction occur? -Yes, a reaction occurred as evidenced by the formation of a precipitate.
Classification of reaction:- This is a double displacement or precipitation reaction, where the cations and anions of two different compounds switch places to form two new compounds, one of which is insoluble and forms a precipitate.