Question

Mg+H3PO4= Al+H3PO4= Fe+HCl= Hg+H2SO4= MgO+HCl= Cu+H2SO4= Al+H2SO4= Ca+HCl= Ag+HCl= Fe2O3+HCl= HgO+H2SO4= CaO+H3PO4= Fe(OH)3+H2SO4=

Answer 1

Ответ смотри во вложении

Где крест и зачеркнуто-реакции нет, для наглядности эхр нарисовала (Ме стоящие после Н-не реагируют)

Answer 2

To balance the chemical equations, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Let's balance each equation:

1. Mg + H3PO4 = Mg3(PO4)2 + H2 (Magnesium + Phosphoric acid = Magnesium phosphate + Hydrogen gas)

2. Al + H3PO4 = AlPO4 + H2 (Aluminum + Phosphoric acid = Aluminum phosphate + Hydrogen gas)

3. 3Fe + 6HCl = 3FeCl2 + 3H2 (Iron + Hydrochloric acid = Iron(II) chloride + Hydrogen gas)

4. Hg + H2SO4 = HgSO4 + H2 (Mercury + Sulfuric acid = Mercury(II) sulfate + Hydrogen gas)

5. MgO + 2HCl = MgCl2 + H2O (Magnesium oxide + Hydrochloric acid = Magnesium chloride + Water)

6. Cu + H2SO4 = CuSO4 + H2 (Copper + Sulfuric acid = Copper sulfate + Hydrogen gas)

7. 2Al + 3H2SO4 = Al2(SO4)3 + 3H2 (Aluminum + Sulfuric acid = Aluminum sulfate + Hydrogen gas)

8. Ca + 2HCl = CaCl2 + H2 (Calcium + Hydrochloric acid = Calcium chloride + Hydrogen gas)

9. 2Ag + 2HCl = 2AgCl + H2 (Silver + Hydrochloric acid = Silver chloride + Hydrogen gas)

10. Fe2O3 + 6HCl = 2FeCl3 + 3H2O (Iron(III) oxide + Hydrochloric acid = Iron(III) chloride + Water)

11. HgO + H2SO4 = HgSO4 + H2O (Mercury(II) oxide + Sulfuric acid = Mercury(II) sulfate + Water)

12. CaO + H3PO4 = Ca3(PO4)2 + H2O (Calcium oxide + Phosphoric acid = Calcium phosphate + Water)

13. Fe(OH)3 + 3H2SO4 = Fe2(SO4)3 + 3H2O (Iron(III) hydroxide + Sulfuric acid = Iron(III) sulfate + Water)

Please note that in some cases, the equations might have different states of matter, but the chemical formulas are balanced, which is the primary objective of chemical equation balancing.