Answer the following questions: Write balanced equations to repre… - Vidyadip

Question

Answer the following questions$:$
Write balanced equations to represent what happens when.

$Cu^{2+}$ is treated with $KI.$
Acidified potassium dichromate solution is reacted with iron $(II)$ solution. $($ionic equation$).$

✓

Answer

$2\text{Cu}^{2+}4\text{I}^-\xrightarrow{\ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+7\text{H}_2\text{O}$

$\text{Cr}_2\text{O}^{2-}_7+14\text{H}^++6\text{e}^-\xrightarrow{ \ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+7\text{H}_2\text{O}$

$\text{Fe}^{2+}\xrightarrow{\ \ \ \ \ \ \ \ \ }\text{Fe}^{3+}+\text{e}^-]\times6$

$\text{Cr}_2\text{O}^{2-}_ +6\text{Fe}^{2+}+14\text{H}^+\xrightarrow{\ \ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+6\text{Fe}^{3+}+7\text{H}_2+\text{O}$

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