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Chemistry Question on Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions

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

Cr2O72−+14H++3Sn2+→2Cr3++3Sn4−+7H2OCr_2O_7^{2-} + 14H^+ + 3Sn^{2+} \rightarrow2Cr^{3+} + 3Sn^{4-} + 7H_2O