X reacts with aqueous NaOH solution to form Y and H 2 Aqueous solution of Y is heated to 323-333 K and on passing CO 2 into it, Na 2 CO 3 and Z are formed. When Z is heated to 1200° C , Al 2 O 3 is formed. X, Y and Z respectively are

Question

X reacts with aqueous NaOH solution to form Y and H 2 Aqueous solution of Y is heated to 323-333 K and on passing CO 2 into it, Na 2 CO 3 and Z are formed. When Z is heated to 1200° C , Al 2 O 3 is formed. X, Y and Z respectively are (A) Al , AlCl 3, NaAlO 2 (B) Zn , Na 2 ZnO 2, Al ( OH )3 (C) Al , Al ( OH )3, AlCl 3 (D) Al , NaAlO 2, Al ( OH )3

Tardigrade Admin · Accepted Answer

underset(X)2 Al +2 NaOH +2 H 2 O arrow underset(Y)2 NaAlO 2+3 H 2 underset(Y)2 NaAlO 2+ CO 2+3 H 2 O underset(Z) stackrelΔ longrightarrow 2 Al ( OH )3+ Na 2 CO 3 underset(Z)2 Al ( OH )3 stackrel1200° C longrightarrow Al 2 O 3+3 H 2 O

Q. $X$ reacts with aqueous $N a O H$ solution to form $Y$ and $H_{2}$ Aqueous solution of $Y$ is heated to $323 - 333 K$ and on passing $C O_{2}$ into it, $N a_{2} C O_{3}$ and $Z$ are formed. When $Z$ is heated to $120 0^{\circ} C, A l_{2} O_{3}$ is formed. $X, Y$ and $Z$ respectively are

$A l, A lC l_{3}, N a A l O_{2}$

$Z n, N a_{2} Z n O_{2}, A l (O H)_{3}$

$A l, A l (O H)_{3}, A lC l_{3}$

$A l, N a A l O_{2}, A l (O H)_{3}$

$(X) 2 A l + 2 N a O H + 2 H_{2} O \to (Y) 2 N a A l O_{2} + 3 H_{2}$

$(Y) 2 N a A l O_{2} + C O_{2} + 3 H_{2} O (Z) ⟶ Δ 2 A l (O H)_{3} + N a_{2} C O_{3}$

$(Z) 2 A l (O H)_{3} ⟶ 120 0^{\circ} C A l_{2} O_{3} + 3 H_{2} O$

Q. X reacts with aqueous NaOH solution to form Y and H2​ Aqueous solution of Y is heated to 323−333K and on passing CO2​ into it, Na2​CO3​ and Z are formed. When Z is heated to 1200∘C,Al2​O3​ is formed. X,Y and Z respectively are

Al,AlCl3​,NaAlO2​

Zn,Na2​ZnO2​,Al(OH)3​

Al,Al(OH)3​,AlCl3​

Al,NaAlO2​,Al(OH)3​