(I) FeCr₂O₄+NaOH + air → Na₂CrO₄+Fe₂O₃ (II) Na₂CrO₄ + H₂SO₄ → Na₂Cr₂Og N

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General Principles and processes of Isolation of Elements

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$(I)$ $FeCr_2O_4+NaOH +$ air $\rightarrow Na_2CrO_4+Fe_2O_3$

$(II)$ $Na_2CrO_4 + H_2SO_4 \rightarrow Na_2Cr_2O_7$

$Na_2CrO_4$ and $Fe_2O_3$ are separated by

A

dissolving in conc. $H_2SO_4$

B

dissolving in $NH_3$

C

dissolving in $H_2O$

D

dissolving in dil. $HCl$

Solution

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Standard 12

Chemistry

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