【多选题】常温下,用0.1000 mol/L HCl溶液滴定20.00 mL 0.1000 mol/L NH 3 ?H 2 O溶液,滴定曲线如下图。下列说法正确的是
A.
①溶液: c (C1 — )> c (NH 4 + )> c (OH — )> c (H + )
B.
②溶液: c (NH 4 + )= c (C1 — )> c (OH — )= c (H + )
C.
③溶液: c (H + )> c (NH 3 ·H 2 O) + c (OH — )
D.
滴定过程中可能出现: c (NH 3 ?H 2 O)> c (NH 4 + )> c (OH — )> c (Cl — )> c (H + )