A) \[{{\operatorname{AlCl}}_{3}}\]
B) \[{{\operatorname{Al}}_{2}}C{{l}_{6}}\]
C) \[{{\operatorname{Al}}_{2}}{{O}_{3}}\]
D) \[\operatorname{Al}(OH)C{{l}_{2}}\]
Correct Answer: C
Solution :
On heating aqueous solution of aluminium \[\begin{align} & 2{{\operatorname{AlCl}}_{3}}+3{{\operatorname{H}}_{2}}O\xrightarrow{\operatorname{A}}{{\operatorname{Al}}_{2}}{{O}_{3}}+\uparrow \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\downarrow \\ & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\operatorname{ppt}. \\ \end{align}\] Chloride to dryness will give \[{{\operatorname{Al}}_{2}}{{O}_{3}}\]
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