Chemistry - Complete Pblock- Question with Solution | TestHub

(1) ${\mathrm{Al}}_2{\mathrm{O}}_3+\mathrm{NaOH}⟶\underset{"\mathrm{X}"}{\mathrm{Na}\left[\mathrm{Al}(\mathrm{OH}{)}_4\right]}$

(2) $\mathrm{Na}\left[\mathrm{Al}(\mathrm{OH}{)}_4\right]\underset{"\mathrm{Y}"}{\overset{{\mathrm{CO}}_2}{\to }}\underset{"\mathrm{Z}"}{\mathrm{Al}(\mathrm{OH}{)}_3}$ or ${\mathrm{Al}}_2{\mathrm{O}}_3·{\mathrm{xH}}_2\mathrm{O}$

So, when ${\mathrm{Al}}_2{\mathrm{O}}_3$ was leached with alkali to get $\mathrm{X}.$ The solution of $\mathrm{X}$ on passing of gas $\mathrm{Y},$ forms $\mathrm{Z}.$

$\mathrm{X},\mathrm{Y}$ and $\mathrm{Z}$ respectively are

$\mathrm{X}:\mathrm{Na}\left[\mathrm{Al}{\left(\mathrm{OH}\right)}_4\right]$

$\mathrm{Y}:{\mathrm{CO}}_2$

$\mathrm{Z}:{\mathrm{Al}}_2{\mathrm{O}}_3·{\mathrm{xH}}_2\mathrm{O}$