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Which of the following is the most effec...

Which of the following is the most effective in causing coagulation of ferric hydroxide sol?

A

KCl

B

`KNO_3`

C

`K_2SO_4`

D

`K_3[Fe(CN)_6]`

Text Solution

Verified by Experts

The correct Answer is:
d
Coagulation is carried out by mixing two opposite charged sols.
Coagulation poer of given compound is
`K_3[Fe(CN)_6]gtK_2SO_4gtKNO_3gtKCl`
`therefore` Ferric hydroxide sol is coagulated effectively by `K_3[Fe(CN)_6]`
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Knowledge Check

  • Which electrolyte is least effective in causing coagulation of +ve ferric hydroxide sol?

    A
    Kbr
    B
    `K_(2)SO_(4)`
    C
    `K_(2)CrO_(4)`
    D
    `K_(3)[Fe(CN)_(6)]`

  • Which electrolyte is least effective in causing coagulation of +ve ferric hydroxide sol?

    A
    KBr
    B
    `K_2SO_4`
    C
    `K_2CrO_4`
    D
    `K_3[Fe(CN)_6]`

  • Which one of the following id most effective in causing the coaglation of an As_2S_3sol ?

    A
    KCl
    B
    `AlCl_3`
    C
    `MgSO_4`
    D
    `K_3[Fe(CN)_6]`

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    Arsenic (III) sulphide form a sol with a negative charge which of the following ionic substances should be most effective in coagulating the sol

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