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An isomer of the complex Co(en)(2)(H(2)O...

An isomer of the complex `Co(en)_(2)(H_(2)O)IC l_(2)`, on reaction with concentrated `H_(2)SO_(4)`, it suffers loss in weight and on reaction with `AgNO_(3)` solution gives a yellow precipitated which is isoluble in `NH_(3)` solution.
Q. If one mole of original is treated with excess `Pb(NO_(3))_(2)` solution, then the number of moles of white precipitate formed will be

A

`2.0`

B

`1.0`

C

`0.0`

D

`3.0`

Text Solution

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The correct Answer is:
C
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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). 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 :

An isomer of the complex Co(en)_(2)(H_(2)O)IC l_(2) , on reaction with concentrated H_(2)SO_(4) , it suffers loss in weight and on reaction with AgNO_(3) solution gives a yellow precipitated which is isoluble in NH_(3) solution. Q. Total number of space isomers of the formula of the above complex is:

An isomer of the complex Co(en)_(2)(H_(2)O)IC l_(2) , on reaction with concentrated H_(2)SO_(4) , it suffers loss in weight and on reaction with AgNO_(3) solution gives a yellow precipitated which is isoluble in NH_(3) solution. Q. If all the ligandsin the co-ordination sphere of the above complex are replaced by CN^(-) ion, then the magnetic moment of the complex ion will be:

An isomerr of the complex CoBrCl_(2)(en)_(2)(H_(2)O) , on reaction with concentrated H_(2)SO_(4) (dehydrating agent), suffers no loss in weight and on reaction with AgNO_(3) solution it gives only white precipitate, which is soluble in NH_(3) solution. Q. The correct formula of the complex is:

An isomerr of the complex CoBrCl_(2)(en)_(2)(H_(2)O) , on reaction with concentrated H_(2)SO_(4) (dehydrating agent), suffers no loss in weight and on reaction with AgNO_(3) solution it gives only white precipitate, which is soluble in NH_(3) solution. Q. The incorrect statement about complex is:

VK JAISWAL-CO-ORDINATION COMPOUNDS-LEVEL 3 (PASSAGE TYPE)
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