Description
In the reactions presented below, how many redox reactions are there?
HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
2H2(g) + O2(g) → 2H2O(l)
HCl(aq) + NaHCO3(aq) → NaCl(aq) + CO2(g) + H2O(l)
2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(l)
CuSO4(aq) + Mg(s) → Cu(s) + MgSO4(aq)