Answer the following question:
A metallurgical company needs high-purity copper for manufacturing electrical wires. The raw copper contains impurities, some of which dissolve during processing, while others remain insoluble. The company uses a method that ensures pure copper is obtained, and the insoluble impurities are collected separately.
i. What is anode mud?
ii. b. Which of the metals are refined by electrolytic refining?
i. Au
ii. Cu
iii. Na
iv. K
i. Au
ii. Cu
iii. Na
iv. K