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Ag(2)S+NaCN+Zn to Ag+W In W the corrd...

`Ag_(2)S+NaCN+Zn to Ag+W`
In W the corrdination number of Z in

Text Solution

Verified by Experts

The correct Answer is:
4
`Ag_(2)S+4NaCN hArr 2Na[Ag(CN_(2))]+Na_(2)S`
`4Na_(2)S+5O_(2)+2H_(2)O to 2Na_(2)SO_(4)+4NaOH+2S`
`2Na[Ag(CN)_(2)]+Zn to Na_(2) underset((A))[Zn(CN)_(4)]+2Ag`
In the compound ()A the coordination number of zn is 4.
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Knowledge Check

  • Ag_(2) S + 4 NaCN to 2X + Na_(2) S Incorrect statement about 'X' is

    A
    X is anionic complex
    B
    In 'X' primary valency and secondary valency of Ag are 1 and 2
    C
    IUPAC and of 'X' is sodium dicyano-argentate (I)
    D
    IUPAC name of 'X' is sodium dicyanosilver (I)

  • The standard reduction potentials of Zn^(2+)//Zn,Cu^(2+)//Cu and Ag^(+)//Ag are respectively -0.78, 0.34 and 0.8 V. The following cells were constructed: (1) Zn |Zn^(2+)|| Cu^(2+)|Cu (2) Zn |Zn^(2+)|| Ag^(+)|Ag (3) Cu |Cu^(2+)|| Ag^(+)|Ag What is the correct order of of these cells?

    A
    `2 gt 3 gt 1`
    B
    `2 gt 1 gt 3`
    C
    `1 gt 2 gt 3`
    D
    `3 gt 1 gt 2`

  • Ag_2S is digested with 1% solution of NaCN and air is blown into the solution, then sulphur in Ag_2S is finally converted to

    A
    `Na_2S`
    B
    `Na_2S_2O_3`
    C
    `Na_2SO_3`
    D
    `Na_2SO_4`

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