Name the reagent that is used in leaching of gold.

Carbon

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Sodium cyanide

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Carbon monoxide

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Iodine

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D Sodium cyanide
Reagents for mineral processing to recover gold is mostly cyanides.
Gold cyanidation is controversial due to the toxic nature of cyanide. Although aqueous solutions of cyanide degrade rapidly in sunlight, the less-toxic products, such as cyanates and thiocyanates, may persist for some years.
$4 A u + 8 N a C N + O_{2} + 2 H_{2} O ⟶ 4 N a [A u {(C N)}_{2}] + 4 N a O H$

Suggest Corrections

Similar questions

C N^{-}

A u

Join BYJU'S Learning Program