Question

み

（４）の解説をお願いします！

(2) PbCl2
() Ag + (f) Cu²+
(1) AB³+ + (f) H₂
(1) (Pb²+ + (4c1-
(2) (1) Ag+ + (2) Cu →
(3) (3) AL + (3)H+
(4) (2) Cr₂O7²- + ( )H+ + (2) 1
() Cr³+ + H₂O + () 1₂