Помогите с 1 и 2 заданием❤️
1.CaCl2+2NaBr=CaBr2+2NaCl Ca2++2Cl-+2Na++2Br-=CaBr2+2Na++2Cl- Ca2++2Br-=CaBr2 Ba(OH)2+Na2SO4=BaSO4+2NaOH Ba2++2OH-+2Na++SO42-=BaSO4+2Na++2OH- Ba2++SO42-=BaSO4