QUESTION 4 The minerals of a 50.0 kg ore sample from a South African mine in Northwest were dissolved by acid leaching t

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Question 4 The Minerals Of A 50 0 Kg Ore Sample From A South African Mine In Northwest Were Dissolved By Acid Leaching T 1 (229.87 KiB) Viewed 56 times

QUESTION 4 The minerals of a 50.0 kg ore sample from a South African mine in Northwest were dissolved by acid leaching to make up a solution whose volume was 25.0 dm³. When this solution was analysed it was found to contain 0.200 mol.dm-³ of Cd²+ (aq) ions and 0.150 mol.dm-3 of Ni²+ (aq) ions. The solution was then subjected to electrolysis at 25.0°C. Calculate the mass percentage purity of the metal that plated last. [18] QUESTION 5 5.1 Calculate the cell potential of the following cell: H₂ (Pt) Fe | Fe(CN)6+ (0.200 mol.dm-³) CN- (0.100 mol.dm-³) 11 H* (pH of 6.00)