(1)NH 4HCO 3分解,反应速率降低;水浴加热
(2)使反应充分进行;NaHCO 3的溶解度最小;NaCl、NH 4Cl、NH 4HCO 3
(3)NaHCO 3、NaCl、NH 4Cl、NH 4HCO 3;HCl
(4)