TS EAMCET · Chemistry · Coordination Compounds
The molecular formula of a coordinate complex is \(\mathrm{COH}_{12} \mathrm{O}_6 \mathrm{Cl}_3\). When one mole of this aqueous solution of complex is reacted with excess of aqueous \(\mathrm{AgNO}_3\) solution, three moles of AgCl was formed. What is the correct formula of the complex?
- A \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
- B \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}^{-} \mathrm{Cl}_2 \mathrm{H}_2 \mathrm{O}\right.\)
- C \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}_2\right] \stackrel{2}{\mathrm{Cl}}\left(\mathrm{H}_2 \mathrm{O}\right)_2\)
- D \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3 \mathrm{Cl}_3\right]\left(\mathrm{H}_2 \mathrm{O}\right)_3\)
Answer & Solution
Correct Answer
(A) \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
Step-by-step Solution
Detailed explanation
\begin{aligned} & \left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3 \rightarrow\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}+\mathrm{Cl}^{-} \\ & 3 \mathrm{Ag}^{+}+3 \mathrm{Cl}^{-} \rightarrow 3…
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