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\({\mathrm{CrCl}}_{3}.{\mathrm{xNH}}_{3}\) can exist as a complex. 0.1 molal aqueous solution of this complex shows a de…

Q1

\({\mathrm{CrCl}}_{3}.{\mathrm{xNH}}_{3}\) can exist as a complex. 0.1 molal aqueous solution of this complex shows a depression in freezing point of \(0.{558}^{0}\mathrm{C}\). Assuming ionisation of this complex and coordination number of Cr is 6 , the complex will be (Given \({\mathrm{K}}_{\mathrm{f}}=1.86\mathrm{Kkg}{\mathrm{mol}}^{-1}\) )

[JEE Main 2025, 23 Jan (Shift 1)]

a

\(\left[\mathrm{Cr}{({\mathrm{NH}}_{3})}_{5}\mathrm{Cl}\right]C{l}_{2}\)

b

\(\left[\mathrm{Cr}{({\mathrm{NH}}_{3})}_{6}\right]C{l}_{3}\)

c

\(\left[\mathrm{Cr}{({\mathrm{NH}}_{3})}_{3}{\mathrm{Cl}}_{3}\right]\)

d

\(\left[\mathrm{Cr}{({\mathrm{NH}}_{3})}_{4}{\mathrm{Cl}}_{2}\right]Cl\)

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