A white precipitate was formed when BaCl2 was added to water extract of an inorganic salt. Further, a gas ‘X’ with characteristic odour was released when the formed white precipitate was dissolved in dilute HCl. The anion present in the inorganic salt is
- I–
\(SO^{2-}_3\)
- S2–
\(NO^{-}_2\)
The Correct Option is B
Solution and Explanation
The correct answer is (B) : \(SO^{2-}_3\)
Anion is
\(SO^{2-}_3\)
\(BaSO_3 \stackrel{dil.HCL}{→} SO_2 ↑\)
X (gas)
Gas is released with smell of burning sulphur.
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Concepts Used:
Qualitative Analysis
Qualitative Analysis involves the systematic identification of ions present in a mixture. It focuses on the properties and reactions of ions, particularly cations. The process begins with the systematic analysis of cations, where precipitation reactions are utilized to sequentially remove cations from a mixture. Students learn to recognize characteristic reactions and observe precipitates, helping identify specific ions.
Also Read: Quantitative Ananlysis
In the context of salt analysis, students employ various techniques to identify cations and anions in inorganic salts. This step-by-step process aids in understanding the composition of the given salts. Additionally, qualitative chemical analysis explores the subjective investigation of substances, examining their chemical properties.
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Principles of Qualitative Analysis cover the physical and chemical properties of different elements, ions, and compounds. This knowledge is essential for providing a foundation for understanding the behavior of substances in chemical reactions. Practical applications, such as salt analysis, further reinforce theoretical concepts in qualitative analysis.