exists in two isomeric forms 'A' and 'S. Isomer 'A' reacts
with 
to give white precipitate, but does not react with 
.
Isomer 'B' gives white precipitate with but does not react with .
Answer the following questions.
(a) Identify 'A' and 'B' and write their structural
formulae.
(b) Name the type of isomerism involved.
(c) Give the IUPAC name of 'A' and 'B'.
Answer:
'A'
gives precipitate with
, so in it Cl is
present outside the coordination sphere. 'B' gives precipitate with 
, so in it 
is present outside the
coordination sphere.
(a) So, A - 
(b) Ionisation
isomerism (as give different ions when subjected to ionisation.)
(c) [A],
Pentaamminesulphatocobalt (III)
chloride.
[B], Pentaamminechloridocobalt (III) sulphate.
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