Răspuns:
2NaCl+H2SO4⇒Na2SO4+2HCl
CuSO4+2KOH⇒K2SO4+Cu(OH)2
ZnO+2HNO3⇒Zn(NO3)2+H2O
2Ca+O2⇒2CaO
4Al+3Cl2⇔2Al2Cl3
CuO+2HCl⇒CuCl2+H2O
NiCl2+2NaOH⇒Ni(OH)2+2NaCl
2Al+3S⇒Al2S3
Explicație:
