A compound (A) of S, C l and O has vapour densiry of 67.5....

A compound $(A)$ of $S, C l$ and $O$ has vapour densiry of $67.5$. Ir reacrs with warer ro form rwo acids and reacts with $\mathrm{KO} 11$ ro form rwo salts $(\mathrm{B})$ and $(C)$, while (B) gives whire precipirate with $\mathrm{AgNO}_{3}$ solution, (C) gives white precipirare with $\mathrm{BaCl}_{2}$ solurion. Idenrify (A) here. (a) $\mathrm{SOCl}_{2}$ (b) $\mathrm{SO}_{2} \mathrm{Cl}_{2}$ (c) $\mathrm{SO}_{2} \mathrm{Cl}$ (d) None of these

A compound $(A)$ of $S, C l$ and $O$ has vapour densiry of $67.5$. Ir reacrs with warer ro form rwo acids and reacts with $\mathrm{KO} 11$ ro form rwo salts $(\mathrm{B})$ and $(C)$, while (B) gives whire precipirate with $\mathrm{AgNO}_{3}$ solution, (C) gives white precipirare with $\mathrm{BaCl}_{2}$ solurion. Idenrify (A) here.
(a) $\mathrm{SOCl}_{2}$
(b) $\mathrm{SO}_{2} \mathrm{Cl}_{2}$
(c) $\mathrm{SO}_{2} \mathrm{Cl}$
(d) None of these

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Key Concepts

Vapor Density and Molecular Weight

Vapor density is a measure used to determine the molecular weight of a compound by comparing its density in the gas phase to that of hydrogen. Since the molecular weight is approximately twice the vapor density, this concept is essential for deducing the formula of a compound from experimental data.

Hydrolysis of Chlorosulfur Compounds

Chlorosulfur compounds can undergo hydrolysis when reacted with water, resulting in the formation of acids. This reaction pattern is important for identifying the structure of such compounds by examining the nature and number of acids produced.

Qualitative Analysis Using Precipitation Reactions

Precipitation tests, such as the formation of a white precipitate with AgNO3 for chloride ions and with BaCl2 for sulfate ions, are key qualitative analysis techniques. They help confirm the presence of specific anions in a reaction mixture, assisting in deducing the compound’s composition.

Stoichiometry and Functional Group Analysis

Understanding the stoichiometric relationships and functional groups involved, such as the presence of both a chlorine substituent and an oxidized sulfur center, allows one to correlate experimental observations with possible molecular formulas, ultimately leading to the correct identification of the compound.

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