[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fiLww9S8kzrPNuMS887dIFw8M_W6Fe-T23lvB2UgBiog":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":77},[],"2025-12-05 10:09:11",251336359,[8,9,10,11],"洗涤","润洗","检查是否漏水","装液、排气泡",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},9,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_48340783","实验6 阿司匹林药片中乙酰水杨酸含量的测定","滴定管在使用前需要进行的操作是( )",[21,32,41,50,59,68,78,81,89],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],251336353,[25,26,27,28],"酸碱滴定法","氧化还原滴定法","配位滴定法","沉淀滴定法","乙酰水杨酸含量测定通常采用的方法是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],251336354,[36,37,38,39],"氢氧化钠","盐酸","硫酸","高氯酸","用酸碱滴定法测定乙酰水杨酸含量时,所用的标准溶液是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],251336355,[45,46,47,48],"羧基","酚羟基","酯基","羰基","乙酰水杨酸的结构中含有( ),可与氢氧化钠发生中和反应",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],251336356,[54,55,56,57],"托盘天平","电子天平","量筒","容量瓶","称取乙酰水杨酸样品时,使用的仪器是( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],251336357,[63,64,65,66],"1","2","3","4","为了减小实验误差,滴定操作时一般要进行( )次平行测定",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":77},[],251336358,[72,73,74,75],"系统误差具有重复性和可校正性","偶然误差不可避免,无法减小","过失误差是可以避免的","误差是不可以避免的","以下关于误差的说法正确的是( )",1,{"answer":79,"createTime":5,"id":6,"options":80,"question":19,"source":30,"type":77},[],[8,9,10,11],{"answer":82,"createTime":5,"id":83,"options":84,"question":87,"source":30,"type":88},[],251336360,[85,86],"正确","错误","乙酰水杨酸含量测定可以选择直接滴定法和返滴定法.( )",3,{"answer":90,"createTime":5,"id":91,"options":92,"question":93,"source":30,"type":88},[],251336361,[85,86],"测定药片的实验中,用HCl返滴后,水解产物是水杨酸钠和乙酸钠( )"]