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  4. Potassium dichromate in acidic solution reacts with Fe2+ gives

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Q. Potassium dichromate in acidic solution reacts with $ Fe^{2+} $ gives

AMUAMU 2011The d-and f-Block Elements

Solution:

Potassium dichromate in acidic solution reacts with $F e^{2+}$ gives $C r^{3+}$ and water.
$6 Fe ^{2+}+2 Cr _{2} O _{7}^{2-} 14 H ^{+} \rightarrow 6 Fe ^{3+}+2 Cr ^{3+}+7 H _{2} O$