When [Ti(H_2O)_6]Cl_3 is heated at 250^{circ} | vedclass

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(D) The complex $[Ti(H_2O)_6]Cl_3$ contains $Ti^{3+}$ ion which has a $3d^1$ electronic configuration.Due to the presence of one unpaired electron,it

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violet to colourless

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(D) The complex $[Ti(H_2O)_6]Cl_3$ contains $Ti^{3+}$ ion which has a $3d^1$ electronic configuration.Due to the presence of one unpaired electron,it undergoes $d-d$ transition and exhibits a violet colour.Upon heating at $250^{\circ} C$ in the presence of oxygen,it decomposes to form $TiO_2$ where titanium is in the $+4$ oxidation state $(Ti^{4+} : 3d^0)$.Since $Ti^{4+}$ has no unpaired electrons,it does not undergo $d-d$ transition and is colourless.Therefore,the colour change is from violet to colourless.

$A$. Haber process	$I$. Fe catalyst
$B$. Wacker oxidation	$II$. $PdCl_2$
$C$. Wilkinson catalyst	$III$. $[(PPh_3)_3RhCl]$
$D$. Ziegler catalyst	$IV$. $TiCl_4$ with $Al(CH_3)_3$

When $[Ti(H_2O)_6]Cl_3$ is heated at $250^{\circ} C$,the change in colour is from

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Match List-$I$ with List-$II$:

$A$. Haber process $I$. Fe catalyst

$B$. Wacker oxidation $II$. $PdCl_2$

$C$. Wilkinson catalyst $III$. $[(PPh_3)_3RhCl]$

$D$. Ziegler catalyst $IV$. $TiCl_4$ with $Al(CH_3)_3$

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