To an aqueous solution containing ions such as Al³⁺, Zn²⁺, Ca²⁺, Fe³⁺, Ni²⁺, Ba²⁺ and Cu²⁺ was added conc. HCl, followed by H₂S.
The total number of cations precipitated during this reaction is / are:

Option 1 - 4

Option 2 - 1

Option 3 - 3

Option 4 - 2

4 Views|Posted 5 months ago

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Answered by

Alok Kumar Singh | Contributor-Level 10

5 months ago

Correct Option - 1

Detailed Solution:

(H? S + dil HCl) is 2nd group reagent so Cu²? get precipitated as CuS.

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To an aqueous solution containing ions such as Al³⁺, Zn²⁺, Ca²⁺, Fe³⁺, Ni²⁺, Ba²⁺ and Cu²⁺ was added conc. HCl, followed by H₂S.The total number of cations precipitated during this reaction is / are:

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