B.
盐酸中的H+在反应中不能消耗掉.
AgNO3 + HCl = AgCl + HNO3
Zn + 2HCl = ZnCl2 + H2
Na2CO3 + 2HCl = 2NaCl + H2O + CO2
NaOH + HCl = NaCl + H2O
B.
盐酸中的H+在反应中不能消耗掉.
AgNO3 + HCl = AgCl + HNO3
Zn + 2HCl = ZnCl2 + H2
Na2CO3 + 2HCl = 2NaCl + H2O + CO2
NaOH + HCl = NaCl + H2O