Question

Write a balanced chemical equation for the conversion of sulphur dioxide to sulphur trioxide?

Answer 1

Hint: We will discuss the sulphur dioxide, bond order, types of orbitals and the resonating structures of sulphur dioxide. We write the complete balanced equation of conversion of sulphur dioxide to sulphur trioxide.
Complete step by step answer:
Sulphur dioxide is the chemical compound with the components S and O. It is a poisonous fuel accountable for the odour of burnt suits. It is released obviously by way of volcanic activity and is produced as a spinoff of copper extraction and the burning of fossil fuels infected with sulphur compounds.
$SO_{2}$ being a bent molecule with $C_{2v}$ symmetry factor group. According to valence bond theory $SO_{2}$ simply consists of s and p orbitals which exaggerates the bonding in terms of resonance between two resonance systems. The sulphur–oxygen bond has a bond order of 1.5. In terms of electron-counting formalism, the sulphur atom has an oxidation nation of +4 and a proper charge of +1.
$O = S^{+} - O^{-} - S^{+} = O$
The Sulphur dioxide (SO_{2} ) gas is oxidized to Sulphur trioxide ($SO_{3}$ ), simplest whilst $SO_{2}$ comes in touch with the floor of catalyst referred to as Vanadium pentoxide( $V_{2}O_{5}$ ), in presence of two–three atmospheric stress and $450–500 ^oc$ temperature. The required chemical equation is
$2SO_{2} + O_{2} \rightarrow 2SO_{3}$

Additional Information:
Sulphur dioxide is occasionally used as a preservative for dried apricots, dried figs, and other dried fruits, attributable to its antimicrobial houses and capacity to prevent oxidation. As a preservative, it keeps the colourful look of the fruit and prevents rotting. It is likewise introduced to sulphured molasses.
Sulphur dioxide was first utilized in winemaking with the aid of the Romans, when they found that burning sulphur candles interior empty wine vessels keeps them clean and free from vinegar smell.

Note:
Sulphur dioxide is also a good reductant. In the presence of water, sulphur dioxide is capable of decolorizing substances. Specifically, it's far a useful decreasing bleach for papers and delicate materials inclusive of clothes. This bleaching impact normally does now not last very lengthy. Oxygen in the ecosystem deoxidizes the reduced dyes, restoring the color. In municipal wastewater treatment, sulphur dioxide is used to treat chlorinated wastewater previous to launch. Sulphur dioxide reduces unfastened and combined chlorine to chloride.