Answer to Question #239330 in General Chemistry for Juanita

Question

Gold (III) hydroxide is used for electroplating gold onto other metals. It can be made by the following reaction. 2KAuCla(aq) + 3NA2COs(aq) + 34,0 > 2AU(OH)s + 6NaCl(aq) + 2K Cliaq) + 3CO2%) To prepare a fresh supply of Au(OH), a chemist at an electroplating plant has mixed 20.00g of KAuCl, with 25.00g of Na,CO; (both dissolved in a large excess of water). What is the maximum mass of Au(OH), that can be formed? [Au= 197, Na= 23, O= 16, K =39, H= 1, Cl=35.5]

Answer 1

Molar mass of AuOH = 214mol/g

= 214-25-20 = 169g