下列各组物质相互混合反应后，最终有白色沉淀生成的是\(\rm{(}\)　　\(\rm{)}\)
\(\rm{①}\)过量\(\rm{Na_{2}O_{2}}\)投入到\(\rm{FeCl_{2}}\)溶液中                 
\(\rm{②}\)过量\(\rm{Ba(OH)_{2}}\)溶液和明矾溶液混合
\(\rm{③}\)少量\(\rm{Ca(OH)_{2}}\)投入过量\(\rm{NaHCO_{3}}\)溶液中   
\(\rm{④Na_{2}SiO_{3}}\)溶液中通入过量\(\rm{CO_{2}}\)
\(\rm{⑤CaCl_{2}}\)与\(\rm{NaOH}\)的混合溶液中通入过量\(\rm{CO_{2}}\)．