Coordination Compounds 1 Question 8

####8. Consider the following reaction and statements :

$\left[Co\left(NH _3\right) _4 Br _2\right]^{+}+Br^{-} \longrightarrow\left[Co\left(NH _3\right) _3 Br _3\right]+NH _3$

I. Two isomers are produces if the reactant complex ion is a cis-isomer.

II. Two isomers are produced if the reactant complex ion is a trans-isomer.

III. Only one isomer is produced if the reactant complex ion is a trans-isomer.

IV. Only one isomer is produced if the reactant complex ion is a $c i$-isomer.

The correct statements are

(2018 Main)

(a) (I) and (II)

(b) (I) and (III)

(c) (III) and (IV)

(d) (II) and (IV)

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Answer:

Correct Answer: 8. (b)

Solution:

  1. If the reactant is $c i$ is isomer than following reaction takes place.

i.e. two isomers are produced. If the reactant is trans isomer than following reaction takes place.

i.e. only 1 isomer is produced. Thus, statement (I) and (III) are correct resulting to option (b) as the correct answer.



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