Verified Solution • 2025–26 Session moderate

QJEEM22Ch9d52: JEE Main 2022 Chemistry - Class 12 JEEM22Ch9d52 Solution: cation gives a prussian blue precipitate on addition of…

Fe3+\mathrm{Fe}^{3+} cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

Multiple Choice Options

  • A [Fe(H2O)6]2[Fe(CN)6]\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]
  • B Fe2[Fe(CN)6]2\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}
  • C Fe3[Fe(OH)2(CN)4]2\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{OH})_{2}(\mathrm{CN})_{4}\right]_{2}
  • D Fe4[Fe(CN)6]3\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}

Step-by-Step Verified Solution

4Fe3++3[Fe(CN)6]−4⟶Fe4[Fe(CN)6]3Prussian Blue4 \mathrm{Fe}^{3+}+3\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{-4} \longrightarrow\underset{\text{Prussian Blue}} {\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3}

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring