[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f3gSyQJ0RoNRmt_BdZ1rKZbDfB27jFGzMJXUJ67i4rgQ":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2026-03-20 16:15:27",325990979,[8,9,10,11],"蒸馏水","稀盐酸","无水乙醇","丙酮",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},5,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","4d10609bb1ec4e43b7b5fd9bfb1a5bfa","","实验中可用于洗涤晶体的试剂是( )",[21,32,41,50,59],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],325990975,[25,26,27,28],"Na₂SO₃ + S → Na₂S₂O₃","Na₂SO₃ + H₂O + S → Na₂S₂O₃ + H₂","Na₂SO₃ + S + H₂O → Na₂S₂O₃ + H₂SO₄","Na₂SO₄ + S → Na₂S₂O₃","在硫代硫酸钠的制备实验中,通常采用亚硫酸钠(Na₂SO₃)与硫粉(S)反应,该反应的化学方程式为( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],325990976,[36,37,38,39],"除去未反应的硫粉","分离生成的Na₂S₂O₃晶体","去除反应中产生的杂质","所有选项均正确","反应完成后过滤的目的是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],325990977,[45,46,47,48],"3.15 g","3.95 g","2.4 g","4.55 g","若用3.2 g Na₂SO₃与0.8 g S完全反应,理论上可生成Na₂S₂O₃的质量为(M(Na₂SO₃)=126 g\u002Fmol,M(S)=32 g\u002Fmol,M(Na₂S₂O₃)=158 g\u002Fmol)( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],325990978,[54,55,56,57],"加入乙醇促进硫粉溶解","需趁热过滤除去硫粉","结晶时需缓慢冷却以减少杂质","反应结束后直接蒸发至干以获取晶体","关于实验操作,错误的是( )",{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":31},[],[8,9,10,11]]