Q. 48 CoSO4Cl-5NH, exists in two isomeric forms ‘A’ and ‘B’ Isomer ‘A’ reacts

with AgNO3 to give white precipitate, but does not react with BaCl,.

Isomer ‘B’ gives white precipitate with BaCl2 but does not react with

AgNO. Answer the following questions.

(a) Identify ‘4’ and ‘8’ and write their structural formulae.

(b) Name the type of isomerism involved.

(c) Give the IUPAC name of ‘A’ and ‘B'.

‘A’ gives precipitate with AgNO3 so in it Clis present outside the coordination sphere.

'B' gives precipitate with BaCl2 so in it SO42- is present outside the coordination sphere

(a) So, A-[Co(NH3)5 SO,] Cl

B-[Co(NH3)5 Cl] SO4 

(b) lonisation isomerism (as give different ions when subjected to ionisation.)

(C) [A] Pentaamminesulphatocobalt (lll) chloride.

(c) [B], Pentaamminechioridocobatt (lll) sulphate.