I. \[Li[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\] |
II. \[Na[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\] |
III. \[K[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\] |
IV. \[Cs[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\] |
A) \[I>II>III>IV\]
B) \[II>IIl>IV>I\]
C) \[IV>III>II>I\]
D) \[III>II>I>IV\]
Correct Answer: C
Solution :
[c] The above mentioned complexes ionises as follows:(I) \[Li[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\xrightarrow{{}}\]\[L{{i}^{\oplus }}_{(aq)}+{{[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]}^{\bigcirc -}}_{(aq)}\] |
(II) \[Na[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\xrightarrow{{}}\]\[N{{a}^{\oplus }}_{(aq)}+{{[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]}^{\bigcirc -}}_{(aq)}\] |
(III) \[K[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\xrightarrow{{}}\]\[{{K}^{\oplus }}_{(aq)}+{{[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]}^{\bigcirc -}}_{(aq)}\] |
(IV) \[Cs[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]\xrightarrow{{}}\]\[C{{s}^{\oplus }}_{(aq)}+{{[Co{{(N{{H}_{3}})}_{2}}{{(N{{O}_{2}})}_{4}}]}^{\bigcirc -}}_{(aq)}\] |
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