The MacArthur-Forrest process is a metallurgical technique for extracting gold from low-grade ore by converting the...
The MacArthur-Forrest process is a metallurgical technique for extracting gold from low-grade ore by converting the gold to water soluble aurocyanide metallic complex ions. It is the most commonly used process for gold extraction. Subsequent processing of aurocyanide allows recovery of pure gold. 4 Au 8 NaCN 02 2 H2O 4 NaAu(CN) 2 + 4 NaOH 1) Using 150,000.0 Liters of 0.0025 M NaCN [sodium cyanide; MW-49.0 g/mol], what theoretical weight in kilograms of gold metal [Atomic Weight 197.0 g/mol]...
41) True or False? Dative bonding occurs when both atoms in a bond contribute an electron 11 point] EXTRA CREDIT: 1) The MacArthur-Forrest process is a metallurgical technique for extracting gold from low-grade ore by converting the gold to water soluble aurocyanide metallic complex ions. It is the most commonly used process for gold extraction. Subsequent processing of aurocyanide allows recovery of pure gold. 4 Au + 8 NaCN + O2 + 2 H20 4 NaAu(CN)2 + 4 NaOH Using...
*7.91. Mining for Gold Gold can be extracted from the surrounding rock using a solution of sodium cyanide. While effective for isolating gold, toxic cyanide finds its way into watersheds, causing environmental damage and harming human health. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) → 4 NaAu(CN)2(aq) + 4 NaOH(aq) 2 NaAu(CN)2(aq) + Zn(s) → 2 Au(s) + Na [Zn(CN)4](ag) a. If a sample of rock contains 0.009% gold by mass, how much NaCN is needed to...