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Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Nitrogen
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Deep blue colour formed by addition of copper (II) sulphate solution to ethyl amine is due to formation of

$\begin{array}{1 1}(a)\;(NH_4)_2SO_4&(b)\;Cu(OH)_2\\(c)\;free\;Cu^{+2}\;ions \;in\;solution&(d)\;[Cu(C_2H_5NH_2)_4]^{2+}\;ions\end{array}$

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$4C_2H_5NH_2+CuSO_4\rightarrow [Cu(C_2H_5NH_2)_4]^{2+}$(Deep blue colour)
Hence (d) is the correct answer.
answered Feb 28, 2014 by sreemathi.v

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