Q. To dissolve argentite ore which of the following is used?
A) Na[Ag(CN)$\ _{2}$
B) NaCN
C) NaCl
D) HCl
Explanation
(b)
Argentite is an ore of Ag having composition $Ag_{2}S.$It dissolves in NaCN due to formation of soluble complex
$Ag_{2}S + 4NaCN \rightarrow 2Na\left\lbrack Ag(CN)_{2} \right\rbrack + NaCl$
$\therefore$NaCN is used to dissolve argentite
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.