Which of the following is locating agent?
Correct answer: D. Ninhydrin
- A. H2S
- B. CS2
- C. Rubeanic acid
- D. Ninhydrin
Explanation
Rubeanic acid is a specific locating agent that forms colored complexes with metals like Cu²⁺ and Ni²⁺. It is used to visualize or detect these metal ions in qualitative analysis. Other options are either reagents, solvents, or used for different purposes.
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About Analytical Chemistry
Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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