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Arrhenius Acid

Few drops of ...

Question

Few drops of $H N O_{3}$ are added to II group before proceedingto III group in order to :

Convert

F e^{2 +}

F e^{3 +}

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Convert

F e^{3 +}

F e^{2 +}

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ppt. III group

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None of these

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Solution

The correct option is A Convert $F e^{2 +}$ to $F e^{3 +}$
Option (A) is correct.
Few drops of $H N O_{3}$ are added to II group before proceedingto III group in order to convert $F e^{2 +}$ to $F e^{3 +}$ .
$F e^{2 +}$ is oxidized to $F e^{3 +}$ in order to precipitate $F e {(O H)}_{3}$ .

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