$[F e (O H)_{3}], F e^{3 +}$ can be coagulated easily by __________.

C l^{-}

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S O_{4}^{2 -}

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P O_{4}^{3 -}

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[F e (C N)_{6}]^{4 -}

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Solution

The correct option is D $[F e (C N)_{6}]^{4 -}$
$F e (O H)_{3}$ is a positively charged solution. To coagulate $F e (O H)_{3}$ we need negatively charged solution.

By Hardy-Schulze rule coagulating power of an electrolyte is directly proportional to valency.

From the above given options $[F e (C N)_{6}]^{4 -}$ has high valency to coagulate $F e (O H)_{3}$ solution.

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Similar questions

F e (O H)_{3}

sol can be more easily coagulated by

N a_{3} P O_{4}

in comparison to

K C l

because:

Question 13
Write the molecular formulae of all the compounds that can be formed by the combination of following ions
$C u^{2 +}, N a^{+}, F e^{3 +}, C l^{-}, S O_{4}^{2}, P O_{4}^{3 -}$

Which of the following species are ions?

${C l}^{-}$ , ${F e}^{3 +}$ , ${N O}_{3}^{-}$ , ${F e C l}_{2}$ , ${O H}^{-}$ , ${S O}_{4}^{2 -}$ , $H_{2} O$ , $C_{12} H_{22} O_{11}$

Q. Arrange the following in increasing flocculating power for coagulation of positive sol.

[F e (C N)_{6}]^{- 4}, P O_{4}^{- 3}, S O_{4}^{- 2}, C l^{-}

Which of the following has highest coagulating power for $A s_{2} S_{3} s o l$ ?

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[Fe(OH)3], Fe3+ can be coagulated easily by __________.

$[F e (O H)_{3}], F e^{3 +}$ can be coagulated easily by __________.