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In coordination chemistry there are a va...

In coordination chemistry there are a variety of methods applied to find out the structure of complexes.One method involves treating the complex with known reagents and from the nature of reaction, the formula of the complex can be predicted.An isomer of the six coordination number complex `Co(en)_2(H_2O)Cl_2Br`,on reaction with concentrated `H_2SO_4` (dehydrating agent) it suffers loss in weight and on reaction with `AgNO_3` solution it gives a white precipitate which is soluble in `NH_3`(aq).
If one mole of original complex is treated with excess `Pb(NO_3)_2` solution, then the number of moles of white precipitate (of `PbCl_2`) formed will be :

A

0.5

B

`1.0`

C

`0.0`

D

`3.0`

Text Solution

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The correct Answer is:
A
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In coordination chemistry there are a variety of methods applied to find out the structure of complexes.One method involves treating the complex with known reagents and from the nature of reaction, the formula of the complex can be predicted.An isomer of the complex Co(en)_2(H_2O)Cl_2Br ,on reaction with concentrated H_2SO_4 (dehydrating agent) it suffers loss in weight and on reaction with AgNO_3 solution it gives a white precipitate which is soluble in NH_3 (aq). The correct formula of the complex is :

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Which of the following complexes has six coordination number?