Make an equation of possible reactions between sulfuric acid and a) Mg, b) Ag, c) Hg, d) MgO, e) Al₂O₃, f) HgO.

Let’s write down the reaction equations:
a) H2SO4 (p-p) – + Mg = MgSO4 + H2 – redox (ORR);
b) 2Ag + H2SO4 (conc.) = AgSO4 + SO2 + H2O – OBP;
c) 2Hg + 2H2SO4 (conc.) = HgSO4 + SO2 + 2H2O – OBP;
d) MgO + H2SO4 = MgSO4 + H2O – exchange:
e) Al2O3 + 3H2SO4 = Al2 (SO4) 3 + 3H2O – exchange;
f) HgO + H2SO4 = HgSO4 + H2O – exchange;
Sulfuric acid is an oxidizing agent that interacts with metals and at the same time itself is reduced to sulfur oxide (SO2). In a solution, sulfuric acid with metals: silver, mercury does not react, since in the series of voltages these metals stand after hydrogen.

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