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Coal and other fossil fuels usually contain sulfur compounds that produce sulfur dioxide, SO2, when burned. One possible way to remove the sulfur dioxide is to pass the combustion gases into a tower packed with calcium oxide, CaO. Write the equation for the reaction. Identify each re- actant as either a Lewis acid or a Lewis base. Explain how you arrived at your answer.

Respuesta :

Explanation:

Lewis acids are the species that accept an electron pair from a donor atom. Whereas Lewis bases are the species that donate an electron pair.

Since, reaction of calcium oxide with sulfur dioxide yields various products depending upon the reaction conditions. But one of the products that are formed by reaction between calcium oxide and sulfur dioxide is as follows.

             [tex]CaO(s) + SO_{2}(g) \rightarrow CaSO_{3}[/tex]

or,         [tex]CaO(s) + SO_{2}(g) \rightarrow Ca_{2}SO_{4}[/tex]

Here, CaO being an oxide and electron donor acts as a lewis base and [tex]SO_{2}[/tex] being an electron acceptor acts as a lewis acid.

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