Identify the correct order of flocculation value for F e OH 3 sol-A- KBr - K 2 C 2 O 4- K 3- F e CN 6- K 4- Fe CN 6-B- KBr - K 2 C 2 O 4- K 3- F e CN 6- K 4- F e CN 6-C- KBr - K 4- F e CN 6- K 2 C 2 O 4- K 3- Fe CN 6-D- K 4- Fe CN 6- K 3- F e CN 6- K 2 C 2 O 4- KBr

The correct option is D K_4[Fe(CN)_6] lt; K_3[Fe(CN)_6] lt; K_2C_2O_4 lt; KBrFe(OH)_3 sol is positively charged sol. So, coagulation (flocculation) is ...

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Standard XII

Chemistry

Coagulation

Identify the ...

Question

Identify the correct order of flocculation value for $F e (O H)_{3}$ sol:

K B r < K_{2} C_{2} O_{4} < K_{3} [F e (C N)_{6}] < K_{4} [F e (C N)_{6}]

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K B r = K_{2} C_{2} O_{4} = K_{3} [F e (C N)_{6}] = K_{4} [F e (C N)_{6}]

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K B r < K_{4} [F e (C N)_{6}] < K_{2} C_{2} O_{4} < K_{3} [F e (C N)_{6}]

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K_{4} [F e (C N)_{6}] < K_{3} [F e (C N)_{6}] < K_{2} C_{2} O_{4} < K B r

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Solution

The correct option is D $K_{4} [F e (C N)_{6}] < K_{3} [F e (C N)_{6}] < K_{2} C_{2} O_{4} < K B r$
$F e (O H)_{3}$ sol is positively charged sol. So, coagulation (flocculation) is due to anions.
Flocculation value is defined as the minimum concentration of an electrolyte required to cause the coagulation of the sol.

Coagulating power $α$ $\frac{1}{F l o c c u l a t i o n v a l u e}$

With respect to anions $B r^{-}, C_{2} O_{4}^{- 2}, [F e (C N)_{6}]^{3 -}, [F e (C N)_{6}]^{4 -}$ ,
the increasing order of coagulation value is
$K_{4} [F e (C N)_{6}] < K_{3} [F e (C N)_{6}] < K_{2} C_{2} O_{4} < K B r$

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Similar questions

Q. The oxidation number of Fe in

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

and

K_{3} [F e {(C N)}_{6}]

is respectively-

Q. Which of the following is diamagnetic?
(I)

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

(II)

K_{3} [C r (C N)_{6}]

(III)

K_{3} [C o (C N)_{6}]

(IV)

K_{2} [N i (C N)_{4}]

Q. The equilibrium constants for the two complex formation are :

4 K^{+} + F e {(C N)}_{6}^{4 -} ⟶ K_{4} [F e {(C N)}_{6}]; K = 3.8 \times 10^{- 38}

3 K^{+} + F e {(C N)}_{6}^{3 -} ⟶ K_{3} [F e {(C N)}_{6}]; K = 5 \times 10^{- 18}

Which one of the following electrolytes has the same value of van‘t Hoff‘s factor as $A l_{2} (S O_{4})_{3}$ (if all are 100% ionised)

Q. The statements regarding ozone
i) lt oxidises

C l_{2}

H C l

ii) lt oxidises

P b S

{P b S O}_{4}

iii) It oxidises

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

K_{3} [F e (C N)_{6}]

The correct combination is:

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Identify the correct order of flocculation value for Fe(OH)3 sol:

Identify the correct order of flocculation value for $F e (O H)_{3}$ sol: