The equation for the hydrometallurgical extraction of silver is
A) Ag+(aq) + Cl-(aq) AgCl(s) .
B) Ag+(aq) + 2S2O32-(aq) Ag(S2O3) 23-(aq) .
C) Ag+(aq) + 2CN-(aq) Ag(CN) 2-(aq) .
D) 2Ag(s) + 2H+(aq) Ag+(aq) + H2(g) .
E) Ag+(aq) + H2(g) 2Ag(s) + 2H+(aq) .
Correct Answer:
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