FIELD: inorganic chemistry. SUBSTANCE: hydrogen arsenide is won by electrochemical reduction of aqueous solution of arsenic acid with concentration 1.0- 3.5 mole/l with current density 1.0-2.5 kA/sq m and at temperature 20-50 C with use of cathode on which potential sufficient for reduction of hydrogen arsenide is achieved. EFFECT: development of simple and time-stable process of winning of especially pure hydrogen arsenide. 1 cl, 2 tbl
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