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July 28, 2015

Homework Help: chemistry

Posted by r on Wednesday, February 3, 2010 at 6:43pm.

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water.
4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq)

Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used.

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