Odpowiedź :
ZnCl2+2NaOH--->Zn(OH)2↓+2NaCl
Zn2+ +2Cl- +2Na+ +2OH- --->Zn(OH)2↓+2Na+ +2Cl-
Zn2+ +2OH- --->Zn(OH)2↓
2AgNO3+K2S--->Ag2S↓+2KNO3
2Ag+ +2NO3- +2K+ +S2- --->Ag2S↓ +2K+ +2NO3-
2Ag+ +S2- --->Ag2S↓
ZnCl2+2NaOH--->Zn(OH)2↓+2NaCl
Zn2+ +2Cl- +2Na+ +2OH- --->Zn(OH)2↓+2Na+ +2Cl-
Zn2+ +2OH- --->Zn(OH)2↓
2AgNO3+K2S--->Ag2S↓+2KNO3
2Ag+ +2NO3- +2K+ +S2- --->Ag2S↓ +2K+ +2NO3-
2Ag+ +S2- --->Ag2S↓