JEE Main 2022 · 27 Jul · Shift 2 · Chemistry Q80

ChemistrySingle correct+4 / -1Question 80 of 90

$\mathrm{Fe^{3+}}$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

\mathrm{[Fe(H_2O)_6]_2[Fe(CN)_6]}

\mathrm{Fe_2[Fe(CN)_6]_2}

\mathrm{Fe_3[Fe(OH)_2(CN)_4]_2}

\mathrm{Fe_4[Fe(CN)_6]_3}

Answer and worked solution

Official answer: D

Prussian blue is ferric ferrocyanide, $\mathrm{Fe_4[Fe(CN)_6]_3}$ .

(D)

Topics:Cation analysis Nomenclature

JEE Main 2022 · 27 Jul · Shift 2, Chemistry question 80