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  • During the conformation test of   when it is treated with thiocyanate , blue color appears due to presence of :<div cla

During the conformation test of  Co^{2+} when it is treated with thiocyanate , blue color appears due to presence of :

Option: 1

[Co(NCS)_4]^{2-}


Option: 2

[Co(CN)_4]^{2-}


Option: 3

[Co(SCN)_4]^{2-}


Option: 4

None of these


Answers (1)

best_answer

As we learnt

 

Test of Cobalt(2+) -

 

CO^{2+} + 4SCN^{-} \rightarrow [Co(SCN)_4]^{2-} \: Blue

[Co(SCN)_4]^{2-}is soluble in any alcohol

- wherein

Blue color confirm the Co^{2+}

 

 

blue color appears due to the presence of [Co(SCN)_4]^{2-}complex

Posted by

rishi.raj

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