Na3AsO3 + 3 Mg + 9 HCl → 3 MgCl2 + AsH3 + 3 NaCl + 3 H2O
This is an oxidation-reduction (redox) reaction:
AsIII + 6 e- → As-III (reduction)
3 Mg0 - 6 e- → 3 MgII (oxidation)
Na3AsO3 is an oxidizing agent, Mg is a reducing agent.
Reactants:
- Na3AsO3
- Mg
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
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