Question

А) Al2O3 → X → Al(OH)3;б) CuO → Y → Cu(OH)2;в) K2CO3 → Z → Na2CO3

Answer 1

Задание А:

Al2O3 + 6HCl = 2AlCl3 + 3H2O

AlCl3 + 3NaOH = Al(OH)3 + 3NaCl

Задание Б:

CuO + 2HCl = CuCl2 + H2O

CuCl2 + 2KOH = Cu(OH)2 + 2KCl

Задание В:

K2CO3 + 2HCl = 2KCl + CO2 + H2O

CO2 + 2NaOH = Na2CO3 + H2O

Таким образом: X = AlCl3, Y = CuCl2, Z = CO2

Answer 2

А) Al2O3 → X → Al(OH)3

In this chemical reaction sequence, X is most likely a hydroxide ion (OH-) donor, which facilitates the conversion of Al2O3 (aluminum oxide) into Al(OH)3 (aluminum hydroxide). The balanced chemical equation would look like this:

2 Al2O3 + 3 X + 6 H2O → 2 Al(OH)3

This reaction is an acid-base reaction, where X acts as a base by donating OH- ions to Al2O3 to form Al(OH)3.

Б) CuO → Y → Cu(OH)2

In this chemical reaction sequence, Y is most likely a hydroxide ion (OH-) donor, which facilitates the conversion of CuO (copper(II) oxide) into Cu(OH)2 (copper(II) hydroxide). The balanced chemical equation would look like this:

CuO + Y + H2O → Cu(OH)2

Similar to the previous reaction, this is also an acid-base reaction, where Y acts as a base by donating OH- ions to CuO to form Cu(OH)2.

В) K2CO3 → Z → Na2CO3

In this chemical reaction sequence, Z is most likely sodium carbonate (Na2CO3), which is produced through a metathesis reaction by mixing K2CO3 (potassium carbonate) with a solution containing sodium ions (Na+). The balanced chemical equation would look like this:

K2CO3 + Z → 2 Na2CO3

This reaction involves the exchange of ions, where Z represents a solution or compound containing sodium ions (Na+), and it reacts with K2CO3 to form Na2CO3.

Please note that the identities of X, Y, and Z were not provided, so the exact substances involved in these reactions cannot be determined with certainty. However, based on the context and typical chemical reactions, these are the most likely interpretations for the given chemical equations.