Chemistry - Salt Analysis Question with Solution | TestHub

ChemistrySalt AnalysisTEST OF CATIONS Dry Test, Group Analysis, Group 1,2Medium2 minQB

ChemistryMediummultiple choice

Passage / Comprehension

"M" is a silver-white metal. It dissolves slowly in dilute acid with the evolution of H₂ and produces an aqueous, colorless solution of metal ion (X).

$(X)$ produce ppt with excess NaOH but produce colourless solution with excess of $NH_{3}$ . Yellow ppt obtain by reaction of $(X)$ with $H_{2} S$ is not soluble in ammonium polysulphide.

Which salt of metal ' M ' is/are water soluble :-

Options:(select one or more)

Answer:

B, C

Solution:

Metal M is Zn, so X = Zn²⁺, which forms insoluble carbonate and phosphate due to low solubility.
ZnCO₃ and Zn₃(PO₄)₂ are generally insoluble in water.
However, ZnCl₂ and Zn(NO₃)₂ are soluble in water due to high hydration energy.
Therefore, the water-soluble salts are Chloride (B) and Nitrate (C).
So, correct answer is B and C.

Stream:JEESubject:ChemistryTopic:Salt AnalysisSubtopic:TEST OF CATIONS Dry Test, Group Analysis, Group 1,2

⏱ 2mℹ️ Source: QB

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