Question

ЯКІСНІ РЕАКЦІЇ: 1. натрій карбонат + нітратна кислота. 2. купрум (2) сульфат + натрій гідроксид. 3. цинк хлорид + натрій гідроксид.

Answer 1

NA2CO3+HNO3-NaNO3+H2CO3 CuSO4+NaOH-Cu(OH)2+Na2SO4 ZnCI2+NaOH-Zn(OH)2+NaCI

Answer 2

Chemical Reactions:

1. Натрій карбонат + нітратна кислота: - When sodium carbonate reacts with nitric acid, it forms sodium nitrate, carbon dioxide, and water. - The balanced chemical equation for this reaction is: ``` Na2CO3 + 2HNO3 → 2NaNO3 + CO2 + H2O ``` - This reaction is a typical acid-base reaction, where sodium carbonate, a base, reacts with nitric acid, an acid, to form a salt (sodium nitrate) and water .

2. Купрум (2) сульфат + натрій гідроксид: - When copper(II) sulfate reacts with sodium hydroxide, it forms copper(II) hydroxide and sodium sulfate. - The balanced chemical equation for this reaction is: ``` CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4 ``` - This reaction is a double displacement reaction, where the positive ions of the two ionic compounds switch places to form two new compounds .

3. Цинк хлорид + натрій гідроксид: - When zinc chloride reacts with sodium hydroxide, it forms zinc hydroxide and sodium chloride. - The balanced chemical equation for this reaction is: ``` ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl ``` - Similar to the previous reaction, this is also a double displacement reaction .