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Standard XII

Chemistry

Ionization Isomerism

CoSO 4 Cl .5 ...

Question

$C o S O_{4} C l .5 N H_{3}$ exists in two isomeric forms 'A and 'B'. Isomer 'A' reacts with $A g N O_{3}$ to give white precipitate, but does not react with $B a C l_{2} .$ Isomer 'B' gives white precipitate with $B a C l_{2}$ but does not react with $A g N O_{3} .$ Answer the following questions.
(a) Identify \A' and 'B' and white their structural formulae
(b) Name the type of isomerism involved.
(c) Give the IUPAC name of 'A' and 'B'.

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Solution

'A' gives a precipitate with $A g N O_{3},$ so in it, Cl presents outside the coordination sphere.
'B' gives precipitate with $B a C l_{2},$ so in it $S O_{4}^{2 -}$ is present outside the coordination sphere.
(a) So, A :- $[C o (N H_{3})_{5} S O_{4}] C l$
B :- $[C o (N H_{3})_{5} C l] S O_{4}$
(b) Ionisation isomerism (as give different ions when subjected to ionisation.)
(c) [A]: Pentaamminesulphatocobalt (III) chloride.
[B]: Pentaamminechloridocobalt (III) sulphate.

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If true enter 1, if false enter 0.

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