Question

СРОЧНО!!! ДАЮ 30 БАЛОВ
Урівняти коефіцієнти :
NaOH + H2SO4 --- Na2SO4 + H2O
ZnO + HNO3 --- Zn(NO3)2 + H2O
CuCl2 + Na2S ---- NaCl + CuS
H2O2 --- H2O + O2
HgO ---- Hg + O2

Answer 1

Ответ:

1. NaOH + H2SO4 → Na2SO4 + H2O - This is a neutralization reaction between sodium hydroxide and sulfuric acid. The products are sodium sulfate and water.

2. ZnO + HNO3 → Zn(NO3)2 + H2O - This is a redox reaction between zinc oxide and nitric acid. The products are zinc nitrate and water.

3. CuCl2 + Na2S → NaCl + CuS - This is a double replacement reaction between copper (II) chloride and sodium sulfide. The products are sodium chloride and copper (II) sulfide.

4. H2O2 → H2O + O2 - This is a decomposition reaction of hydrogen peroxide. The products are water and oxygen.

5. HgO → Hg + O2 - This is a decomposition reaction of mercury (II) oxide. The products are mercury and oxygen.