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Into iron pyrites in water, air was bubb...

Into iron pyrites in water, air was bubbled for a long time. Green crystal (A) and another substance (B) were produced. 'A' in solution was treated with conc. `HNO_(3)` and B. The solution was evaporated and crystallized, pale yellow crystals of 'C' was produced .
To the solution of A and C, `K_(3)[Fe(CN)_(6)]` and `K_(4)[Fe(CN)_(6)]` were added respectively.
The colors produced are

A

Red, Green

B

Blue, Blue

C

Red, Red

D

Green, Green

Text Solution

Verified by Experts

The correct Answer is:
B
A and C are `FeSO_(4)` and `Fe_(2)(SO_(4))_(3)`. Turnbulls and Prussian blue are produced.
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Knowledge Check

  • Into iron pyrites in water, air was bubbled for a long time. Green crystal (A) and another substance (B) were produced. 'A' in solution was treated with conc. HNO_(3) and B. The solution was evaporated and crystallized, pale yellow crystals of 'C' was produced . B is

    A
    `FeSO_(4)`
    B
    `Fe_(2)(SO_(4))_(3)`
    C
    `H_(2)SO_(4)`
    D
    `H_(2)S`

  • Into iron pyrites in water, air was bubbled for a long time. Green crystal (A) and another substance (B) were produced. 'A' in solution was treated with conc. HNO_(3) and B. The solution was evaporated and crystallized, pale yellow crystals of 'C' was produced . 'A' is

    A
    `Fe_(2)O_(3)`
    B
    `FeO`
    C
    `Fe_(2)(SO_(4))_(3)`
    D
    `FeSO_(4)`

  • Into iron pyrites in water, air was bubbled for a long time. Green crystal (A) and another substance (B) were produced. 'A' in solution was treated with conc. HNO_(3) and B. The solution was evaporated and crystallized, pale yellow crystals of 'C' was produced . The reagent that gives red color with a solution of C is

    A
    `NH_(4)CNO`
    B
    `NH_(4)SCN`
    C
    `K_(4)[Fe(CN)_(6)]`
    D
    `K_(3)[Fe(CN)_(6)]`