For the given aqueous reactions, which of the statement(s) is(are) true? Excess KI + K_3[Fe(CN)_6] \to^{\dilute H_2SO_4} Brownish - yellow solution \to^{ZnSO_4} White precipitate + {Brownish-yellow filtrate} \to^{Na_2S_2O_3} Colourless solution [JEE Adv 2012 P2]

The first reaction is a redox reaction.

White precipitate is Zn_3[Fe(CN)_6]_2.

Addition of filtrate to starch solution gives blue colour.

White precipitate is soluble in NaOH solution.

d and f block elements

Section: Chemistry

Question : 22 of 24

Marks: +1, -0

For the given aqueous reactions, which of the statement(s) is(are) true?
Excess KI + K3[Fe(CN)6]

dilute‌H2‌S‌O4

→

Brownish - yellow solution

ZnSO4

→

White precipitate + {Brownish-yellow filtrate}

Na2S2O3

→

Colourless solution

[JEE Adv 2012 P2]

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