[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmwbr9WIVTlF4eU2T00qxALHp3gLxTBZ8HCCikbYay-I":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-27 09:18:38",243006391,[8,9,10,11],"不必处理","烤干","用滴定剂润洗","用待测液润洗",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},25,"60d7bc0d469d521b5f95274aff0ddf30","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdb3a5eb6177bf85ad556cb52c242afa2.jpg","分析化学","exam_167256132","阶段测试1","滴定分析中,装入滴定剂之前,滴定管内壁沾有蒸馏水( )",[21,32,41,50,59,68,77,86,95,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],243006360,[25,26,27,28],"HAc 溶液(1.0mol&middot;L-1)","HCl溶液(1.0mol&middot;L-1)","HAc(1.0mol&middot;L-1)+NaAc(1.0mol&middot;L-1)","NH3﹒H2O溶液(1.0mol&middot;L-1","用纯水将下列溶液稀释10倍时,其pH值变化最小的是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],243006363,[36,37,38,39],"偶然误差具有单向性","偶然误差在分析中是无法避免的","偶然误差的数值大小、正负出现的机会是均等的","偶然误差具有随机性","下列有关偶然误差的论述中不正确的是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],243006367,[45,46,47,48],"突跃范围内停止滴定,其滴定误差小于0.1%","弱酸能被强碱准确滴定的条件是CaKa&ge;10-8","指示剂的变色范围必须全部落在滴定突跃范围之内","浓度大,酸碱滴定突跃范围大","酸碱滴定分析中,下列说法哪一个是不正确的?( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],243006369,[54,55,56,57],"偏高","不一定","不受影响","偏低","用Na2CO3标定HCl溶液时,若未干燥,则得到的结果( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],243006375,[63,64,65,66],"NaCl","KMnO4","浓HCl","Na2S2O3","下列物质中可用于直接配制标准溶液的是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],243006380,[72,73,74,75],"3","2","1","0","用0.1000mol\u002FL NaOH标准溶液滴定0.1000mol\u002FL H2C2O4(Ka1=6.4&times;10-2,Ka2=6.1&times;10-5)溶液时,能形成几个突跃?( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],243006382,[81,82,83,84],"0.08%","0.02%","0.1%","0.04%","滴定管的读数误差为&plusmn;0.01ml时,如果滴定用去标准溶液25.00ml,其相对误差是( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":30,"type":31},[],243006387,[90,91,92,93],"三位","四位","一位","二位","用加热驱除水分法测定CaSO4&middot;1\u002F2H2O中结晶水的含量时,称取试样,已知天平称量误差为&plusmn;0.0001g,分析结果的有效数字小数点后应取( )",{"answer":96,"createTime":5,"id":6,"options":97,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],243006396,[102,103,104,105],"化学反应时按定量进行,没有副反应","纯度在99.9以上,具有较大的摩尔质量","物质的组成与化学式相符,且性质稳定","应该是化合物,不能是单质","下列哪条是基准物质不应具备的条件( )"]