Extraction of Metals - Result Question 77
80. Write the chemical reactions involved in the extraction of silver from argentite.
$(2000,2 M)$
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Solution:
$ \begin{aligned} 4 NaCN+Ag _2 S & \longrightarrow 2 Na\left[Ag(CN) _2\right]+Na _2 S \\ 2 Na\left[Ag(CN) _2\right]+Zn & \longrightarrow Na _2\left[Zn(CN) _4\right]+2 Ag \end{aligned} $
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