Question

To dissolve argentite ore which of the following is used?

• A. $Na\,[Ag(CN)_{2}]$
• B. $NaCN$
• C. $NaCl$
• D. $HCl$

Answer 1

Answer: (B)

$NaCN$

Answer 2

Argentite is $Ag _{2} S$. $Ag _{2} S +4 NaCN \longrightarrow 2 Na \left[ Ag ( CN )_{2}\right]+ Na _{2} S$ $AgCl +2 NaCN \longrightarrow Na \left[ Ag ( CN )_{2}\right]+ NaCl$