Write reactions to justify amphoteric nature of aluminium.
Write reactions to justify amphoteric nature of aluminium.
A substance is called amphoteric if it displays characteristics of both acids and bases. Aluminium dissolves in both acids and bases, showing amphoteric behaviour.
$2 \mathrm{Al}+6 \mathrm{HCl} \rightarrow 2 \mathrm{Al}^{+3}+6 \mathrm{Cl}^{-}+3 \mathrm{H}_{2}$
$2 \mathrm{Al}+2 \mathrm{NaOH}+6 \mathrm{H}_{2} \mathrm{O} \rightarrow 2 \mathrm{Na}^{+}\left[\mathrm{Al}(\mathrm{OH})_{4}\right]^{-}+3 \mathrm{H}_{2}$
Similar Questions
Choose the correct sequence for the geometry of the given molecules Borazone, Borazole, $B_3O_6^{-3}$ , $Fe_2Cl_6$, trimer of $FCN$. [$'P'$ stands for planar and $'NP'$ stands for non-planar]
Choose the correct sequence for the geometry of the given molecules Borazone, Borazole, $B_3O_6^{-3}$ , $Fe_2Cl_6$, trimer of $FCN$. [$'P'$ stands for planar and $'NP'$ stands for non-planar]
Borax is converted into crystalline boron by the following steps
${B{orax}}\xrightarrow{X}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow[\Delta ]{Y}B$,
$X$ and $Y$ are respectively
Borax is converted into crystalline boron by the following steps
${B{orax}}\xrightarrow{X}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow[\Delta ]{Y}B$,
$X$ and $Y$ are respectively
Which of the following statements about anhydrous aluminium chloride is correct?
Which of the following statements about anhydrous aluminium chloride is correct?
$N{a_2}{B_4}{O_7}\xrightarrow{x}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow{y}B$
Here $X, Y$ are respectively
$N{a_2}{B_4}{O_7}\xrightarrow{x}{H_3}B{O_3}\xrightarrow{\Delta }{B_2}{O_3}\xrightarrow{y}B$
Here $X, Y$ are respectively
The liquid field metal expanding on solidification is
The liquid field metal expanding on solidification is
- [AIIMS 2004]