Which of the following statements is/are correct :

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Equivalent mass of $B r_{3} O_{8}$ in the given reaction is( molecular weight / 16)

$B r_{3} O_{8} + I^{-} + H^{+} \to B r_{2} + I_{2} + H_{2} O$

In case of oxalic acid $(H_{2} C_{2} O_{4})$ , the average oxidation number and individual oxidation numbers of Carbons have the same value.

In case of iodimetric titration, KI is made to react with an oxidising agent and the liberated $I_{2}$ is made to titrate with standard hypo solution.

Equivalent mass of $C u_{3} P$ in the given reaction is M/11 (where M = mol. mass)
$C u_{3} P + K M n O_{4} + H^{+} \to C u^{2 +} + P O_{4}^{- 3} + K^{+} + M n^{2 +} + H_{2} O$

answer is A, B, D.

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Detailed Solution

A) v.f. of $B r_{3} O_{8} = 3 (\frac{16}{3} - 0) = 16 ∴$ equivalent mass = M/16 = 368/16 = 23.
B) In case of oxalic acid $(H_{2} C_{2} O_{4})$ , the average oxidation number and individual oxidation number of Carbon have the same value, equal to + 3.
C) In case of iodometric titration, KI is made to react with an oxidising agent and the liberated $I_{2}$ gas is made to titrate with hypo solution.
D) v.f. of $C u_{3} P = 3 (2 - 1) + 1 (5 - (- 3)) = 11 ∴$ equivalent mass = M/11