(ii)(a)pMsp?8.65;(b)lg?M(A)?3.0
(5)5.8,12.55,5.45 (6)37.30,62.32 (7)5.7?1011,5.5?10?2 (8)0.23
(9)pH=8.0时,?pH?4.6;pH?12时,?pH?6.89
3?(10)?Y(Al)?1,?Y(H)???Y(Al),故可消除Al的干扰
(11)-0.007%
(12)Et??0.32%,故不能选用二甲苯酚为指示剂 (13)6.8,6.96 (14)4.7;11.2 (15)0.02% (16)0.010mol?L
(17)lgKHgY??7.8,不能滴定Hg(18)8.0?10(19)8.7
(20)5.3,6.5,7.7
(21)(i)0.25%;(ii)-0.007% (22)lgKBiY?9.9 (23)5.6?10
?9?3?1'2?
?1mol?L?1,1.8?10?4mol?L
'mol?L?1