CaHPO3 + 2 AgNO3 + H2O → CaHPO4 + 2 Ag + 2 HNO3
This is an oxidation-reduction (redox) reaction:
PIII - 2 e- → PV (oxidation)
2 AgI + 2 e- → 2 Ag0 (reduction)
CaHPO3 is a reducing agent, AgNO3 is an oxidizing agent.
Reactants:
Products:
- CaHPO4 – Calcium hydrogen phosphate
- Ag
- HNO3 – Nitric acid
- Other names: Aqua fortis , Spirit of niter , Eau forte
- Appearance: Colorless, yellow or red fuming liquid ; Colourless-to-yellow liquid with pungent odour ; Colorless, yellow, or red, fuming liquid with an acrid, suffocating odor. [Note: Often used in an aqueous solution. Fuming nitric acid is concentrated nitric acid that contains dissolved nitrogen dioxide.]