Make an equation: Sulfur → sulfur (IV) oxide → sulfurous acid → lithium sulfite.

In this chain Sulfur → sulfur (IV) oxide → sulfurous acid → lithium sulfite, the reactions will proceed as follows:
1) S + O2 = SO2. Sulfur on combustion gives sulfur oxide.
2) SO2 + H2O = H2SO3. When interacting with water, sulfur oxide will give sulfurous acid.
3) H2SO3 + LiOH = Li2SO3 + H2O. When sulfurous acid interacts with lithium hydroxide, lithium sulfite and water will be formed.



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