锌和稀盐酸Zn + 2HCl == ZnCl2 + H2↑
铁和稀盐酸Fe + 2HCl == FeCl2 + H2↑
镁和稀盐酸2Na+ 2HCl == 2NaCl + H2↑
铝和稀盐酸2Al + 6HCl == 2AlCl3 + 3 H2↑