Question

Al₂O₃ was leached with alkali to get X. The solution of X on passing of gas Y forms Z. X, Y and Z respectively are:

Options

• X = Na[Al(OH)₄], Y = CO₂, Z = Al₂O₃.xH₂O

• X = Na[Al(OH)₄], Y = SO₂, Z = Al₂O₃

• X = Al(OH)₃, Y = SO₂, Z = Al₂O₃.xH₂O

• X = Al(OH)₃, Y = CO₂, Z = Al₂O₃

Answer 1

X = Na[Al(OH)₄], Y = CO₂, Z = Al₂O₃.xH₂O

Explanation:

\[\ce{Al2O3(s) + 2NaOH(aq) + 3H2O(l) -> \underset{(X)}{2Na[Al(OH)4](aq)} ->[CO2(g)][Y] \underset{(Z)}{Al2O3.{x}H2O} + 2NaHCO3}\]