On complete reaction of $F e C l_{3}$ with oxalic acid in aqueous solution containing $K O H$ , resulted in the formation of product $A$ . The secondary valency of $F e$ in the product $A$ is (Round off to the Nearest Integer ).

6.00

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6.0

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Solution

$F e C l_{3}$ with oxalic acid in aqueous $K O H$ solution to form complex, $K_{3} [F e (C_{2} O_{4})_{3}]$ .
The reaction is,
$F e C l_{3} + 3 H_{2} C_{2} O_{4} 6 K O H - --- \to K_{3} [F e (C_{2} O_{4})_{3}] + 3 K C l + 6 H_{2} O$

The secondary valencies are non-ionisable. These are satisfied by neutral molecules or negative ions. A secondary valency is equal to the coordination number.

Coordination number $= 6$
Secondary valency is $6$

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On complete reaction of FeCl3 with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is (Round off to the Nearest Integer ).

On complete reaction of $F e C l_{3}$ with oxalic acid in aqueous solution containing $K O H$ , resulted in the formation of product $A$ . The secondary valency of $F e$ in the product $A$ is (Round off to the Nearest Integer ).