Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present ?
In the electrolytic refining of copper, the anode mud contains antimony, selenium, tellurium, silver gold and platinum. These are impurities in blister copper. They are less reactive and unaffected by CuSO4−H2SO4 solution and hence, settle down under anode as anode mud.