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Abnormal Colligative Properties

When acidifie...

Question

When acidified $K_{2} {C r}_{2} O_{7}$ solution is added to ${S n}^{+ 2}$ salts, then ${S n}^{+ 2}$ changes to:

S n

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{S n}^{3 -}

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{S n}^{4 +}

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{S n}^{2 -}

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Solution

The correct option is C ${S n}^{4 +}$
${C r}_{2} O_{7}^{2 -} + 3 {S n}^{+ 2} + 14 H^{+} ⟶ 3 {S n}^{4 +} + 2 {C r}^{3 +} + 7 H_{2} O$

$S n$ gets oxidised from ${S n}^{+ 2}$ to ${S n}^{+ 4}$ .

Hence, option $C$ is correct.

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