CaCO3 + 2HCl = CaCl2 + H2O+CO2↑铝是活泼金属可以和盐酸反应生产氢气:2Al + 6HCl = 2AlCl3 + 3H2↑
因为两性金属,它的氧化物能和强酸或强碱反应,如果是酸Al₂O₃ + 6H+ == 2Al3+ + 3H₂O
CaCO3 + 2HCl = CaCl2 + H2O2Al + 6HCl = 2AlCl3 + 3H2