4.
下列反应的离子方程式正确的是\(\rm{(}\) \(\rm{)}\)
\(\rm{①}\)向氯化铝溶液中加入过量氨水 \(\rm{Al^{3+}+4NH_{3}⋅H_{2}O═[Al(OH)_{4}]^{-}+4NH_{4}^{+}}\)
\(\rm{②}\)铁屑溶于足量稀硝酸:\(\rm{Fe+4H^{+}+NO_{3}^{-}═Fe^{3+}+NO↑+2H_{2}O}\)
\(\rm{③}\)向\(\rm{Ba(OH)_{2}}\)溶液中逐滴加入\(\rm{NaHSO_{4}}\)溶液至刚好沉淀完全:\(\rm{Ba^{2+}+OH^{-}+H^{+}+SO_{4}^{2-}═BaSO_{4}↓+H_{2}O}\)
\(\rm{④0.1molFeBr_{2}}\)中通入\(\rm{0.1molCl_{2}}\):\(\rm{2Fe^{2+}+4Br^{-}+3Cl_{2}═2Fe^{3+}+2Br_{2}+6Cl^{-}}\)
\(\rm{⑤}\)硫化钠溶液呈碱性:\(\rm{S^{2-}+2H_{2}O⇌H_{2}S+2OH^{-}}\)
\(\rm{⑥}\)向苯酚钠溶液中通入少量\(\rm{CO_{2}}\):\(\rm{C_{6}H_{5}O^{-}+CO_{2}+H_{2}O=C_{6}H_{5}OH+HCO_{3}^{-}}\).