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Question: When acidified \(K_{2}Cr_{2}O_{7}\) solution is added to \(Sn^{2 +}\)salts, then \(Sn^{2 +}\) change...

When acidified K2Cr2O7K_{2}Cr_{2}O_{7} solution is added to Sn2+Sn^{2 +}salts, then Sn2+Sn^{2 +} changes to

A

SnSn

B

Sn3+Sn^{3 +}

C

Sn4+Sn^{4 +}

D

Sn+Sn^{+}

Answer

Sn4+Sn^{4 +}

Explanation

Solution

m

Cr2O72−+14H++3Sn2+→2Cr3++3Sn4++7H2OCr_{2}O_{7}^{2 -} + 14H^{+} + 3Sn^{2 +} \rightarrow 2Cr^{3 +} + 3Sn^{4 +} + 7H_{2}O