Question

3. «Знайди і виправ» Hg+ HCl = HgCl2 + H2 2Au+ H2SO4 = Au 2SO4 + H2 MgO+ HCl = MgCl + H2 Са+ H2SO4 = СаSO4 + H2О Na + HCl = K2Cl+ H2 K2O+ HВr= K2Cl + H2

Answer 1

Ответ:

Hg + 2 HCl → H2 + HgCl2

2 Au + 6 H2SO4 → Au2(SO4)3 + 3 SO2 + 6 H2O

MgO + 2 HCl → MgCl2 + H2O

4 Ca + 5 H2SO4 → 4 CaSO4 + H2S + 4 H2O або Ca + H2SO4 → CaSO4 + H2

2 Na + 2 HCl → 2 NaCl + H2

2HBr + K2O → 2KBr + H2O

Answer 2

1. Hg + 2HCl = HgCl2 + H2
2. 2Au + 2H2SO4 = Au2(SO4)3 + 2H2
3. MgO + 2HCl = MgCl2 + H2O
4. Ca + H2SO4 = CaSO4 + H2
5. 2Na + 2HCl = 2NaCl + H2
6. K2O + 2HCl = 2KCl + H2O

I have corrected the chemical equations for you. Please note that the correct subscripts and coefficients have been added to balance the equations.