Chemistry, asked by anushkakumar1320, 7 months ago

In the leaching of Ag2S with NaCN, a stream of air is also passed. It is because
(a) The reaction between Ag2S and NaCN is reversible.
(b) to oxidise Na2S formed in the reaction to Na2SO4.
(c) to oxidise Ag2S to Ag2O.
(d) Both (a) and (b).

Answers

Answered by manojkumarsingh19701

Answer:

Reactions occurs in extraction of silver - Ag2S + 4NaCN→ 2Na[Ag(CN)2] + Na2S (reversible reaction) 4Na2S + 5O2 + H2O→ 2Na2SO4 + 4NaOH + 2S and 2Na[Ag(CN)2] ..

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In the leaching of Ag2S with NaCN, a stream of air is also passed. It is because (a) The reaction between Ag2S and NaCN is reversible. (b) to oxidise Na2S formed in the reaction to Na2SO4. (c) to oxidise Ag2S to Ag2O. (d) Both (a) and (b).

Answers

In the leaching of Ag2S with NaCN, a stream of air is also passed. It is because
(a) The reaction between Ag2S and NaCN is reversible.
(b) to oxidise Na2S formed in the reaction to Na2SO4.
(c) to oxidise Ag2S to Ag2O.
(d) Both (a) and (b).