Question

in contact process arsenic impurities is removed by

Answer 1

Answer:

sorry bro I cannot help you

Answer 2

Answer :

After the gas is cooled, the sulfur dioxide enters the washing tower where it is sprayed by water to remove any soluble impurities. In the drying tower, sulfuric acid is sprayed on the gas to remove the moisture from it. Finally, the arsenic oxide is removed when the gas is exposed to ferric hydroxide.