Question

To dissolve argentite ore which of the following is used?

• A. $Na\left[Ag(CN{)}_2\right]$
• B. $NaCN$
• C. $NaCl$
• D. $HCl$

Answer 1

Answer: (B)

Argentite is $A{g}_{2}S$.
$A{g}_{2}S+4NaCN⟶2Na\left[Ag(CN{)}_2\right]+N{a}_{2}S$
$AgCl+2NaCN⟶Na\left[Ag(CN{)}_2\right]+NaCl$