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A mixture consist of a yellow solid [A] ...

A mixture consist of a yellow solid [A] and colourless solid [B] which given lilac colour in flame. The miture given a black precipiate [C] on passing `H_(2)S` gas. The precipitate [C] is soluble in aqura region and on evaporating and on adding `SnCl_(2)`, gives greyish black precipitate [D]. The misture solution on reacing with `NH_(4)OH` gives a brown precipiates. The sodium extract of the mixture with `C Cl_(4)//FeCl_(3)` given violet layer. The extract also given yellow precicitate with `AgNO_(3)` solution which is insoluble in `NH_(3)`.
The yellow solied [A] in the mixture is :

A

Stannous chlordie

B

Mercuric chloride

C

Mercuric iodide

D

Arsenic cholride.

Text Solution

Verified by Experts

The correct Answer is:
C

(c) The data suggests that the yellow solid [A] is mercuric iodide `[HgI_(2)]`.
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Knowledge Check

  • A mixture consist of a yellow solid [A] and colourless solid [B] which given lilac colour in flame. The miture given a black precipiate [C] on passing H_(2)S gas. The precipitate [C] is soluble in aqura region and on evaporating and on adding SnCl_(2) , gives greyish black precipitate [D]. The misture solution on reacing with NH_(4)OH gives a brown precipiates. The sodium extract of the mixture with C Cl_(4)//FeCl_(3) given violet layer. The extract also given yellow precicitate with AgNO_(3) solution which is insoluble in NH_(3) . The black precipitate [c] is of :

    A
    Mercurous sulphide
    B
    Mercuric sulphide.
    C
    Bismuth sulphide
    D
    Lead sulphide.
  • A mixture consist of a yellow solid [A] and colourless solid [B] which given lilac colour in flame. The miture given a black precipiate [C] on passing H_(2)S gas. The precipitate [C] is soluble in aqura region and on evaporating and on adding SnCl_(2) , gives greyish black precipitate [D]. The misture solution on reacing with NH_(4)OH gives a brown precipiates. The sodium extract of the mixture with C Cl_(4)//FeCl_(3) given violet layer. The extract also given yellow precicitate with AgNO_(3) solution which is insoluble in NH_(3) . The greyish black precipitate [D] is of

    A
    mercury
    B
    silver
    C
    lead
    D
    None of these
  • Which of the following mixtures would give a black precipitate on passing H_2S through its acidified aqueous solution ?

    A
    `Cu^(2+)` and `Pb^(2+)`
    B
    `Zn^(2+)` and `Mg^(2+)`
    C
    `Mg^(2+)` and `Fe^(2+)`
    D
    `Mg^(2+)` and `Ni^(2+)`
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