Given below are two statements: Statement I: Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature. Statement II: AlCl_3 upon hydrolysis in acidified aqueous solution forms octahedral [Al (H_2 O )_6 ]^ 3+ ion. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements: Statement I: Group 13 trivalent h…

MCQ

Given below are two statements:

Statement $I$: Group $13$ trivalent halides get easily hydrolyzed by water due to their covalent nature.

Statement $II$: $\mathrm{AlCl}_3$ upon hydrolysis in acidified aqueous solution forms octahedral $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ ion.

In the light of the above statements, choose the correct answer from the options given below :

A
Statement $I$ is true but statement $II$ is false
B
Statement $I$ is false but statement $II$ is true
C
Both statement $I$ and statement $II$ are false
✓
Both statement $I$ and statement $II$ are true

✓

Answer

Correct option: D.

Both statement $I$ and statement $II$ are true

d
In trivalent state most of the compounds being covalent are hydrolysed in water. Trichlorides on hydrolysis in water form tetrahedral $\left[\mathrm{M}(\mathrm{OH})_4\right]^{-}$ species, the hybridisation state of element $\mathrm{M}$ is $\mathrm{sp}^3$.

In case of aluminium, acidified aqueous solution forms octahedral $\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ ion.

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$(I)$ $\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{C{H_3} - C{H_2} - O - S - C{F_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O}
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$(II)$ $CH_3-CH_2-O-TsCl$

$(III)$ $\begin{array}{*{20}{c}}
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{|\,\,\,\,} \\
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| \\
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{\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,O\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
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{O\,\,\,\,\,\,\,} \\
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{CHO} \\
{|\,\,\,\,\,\,\,\,} \\
{CHO}
\end{array}$