2 Na2WO4 + SnCl2 + 6 HCl → W2O5 + SnCl4 + 4 NaCl + 3 H2O
This is an oxidation-reduction (redox) reaction:
2 WVI + 2 e- → 2 WV (reduction)
SnII - 2 e- → SnIV (oxidation)
Na2WO4 is an oxidizing agent, SnCl2 is a reducing agent.
Reactants:
- Na2WO4 – Sodium tungstate
- SnCl2 – Tin(II) chloride , Tin dichloride
- 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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