[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fs0kyXap89VuRoxpSqQz_HhaRK6GNGpnoRK_IpRmkw9E":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":13,"question":20,"related":21,"source":33,"type":34},[],"2024-05-31 19:53:39",147627910,[8,9,10,11,12],"1.0","0.0010","0.00010","0.10","0.010",{"count":14,"courseId":15,"courseImg":16,"courseName":17,"workId":18,"workName":19},11,"f6e8c2cba8ee25cdd8b5ec64204479f9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcd6aa804f56468e1fa7bc4a2057046b9.png","分析化学","work_34851524","第3章 滴定分析法概论 作业","某水溶液中含Ca2+40mg\u002FL设其溶液密度(25.C)为1.0g\u002FmL,则Ca2+的物质量浓度(单位:mol\u002FL)为( )(已知:Ca的摩尔质量为40.08g\u002Fmol)",[22,35,45,55,65,68,78,88,99,108],{"answer":23,"createTime":24,"id":25,"options":26,"question":32,"source":33,"type":34},[],"2024-05-31 19:53:38",147627906,[27,28,29,30,31],"滴定误差","滴定","滴定终点","等当点","滴定分析","滴定分析中,一般利用指示剂颜色的突变来判断等当点的到达,在指示剂变色时停止滴定.这一点称为( )","v1",0,{"answer":36,"createTime":24,"id":37,"options":38,"question":44,"source":33,"type":34},[],147627907,[39,40,41,42,43],"4C(HCOOH) = C(H2SO4)","C(HCOOH) = 2C(H2SO4)","C(HCOOH) =4C(H2SO4)","2C(HCOOH) = C(H2SO4)","C(HCOOH) = C(H2SO4)","用0.10 mol\u002FL的NaOH溶液分别滴定25mL的H2SO4和HCOOH溶液时,若消耗NaOH的体积相同,则H2SO4和HCOOH两种溶液浓度之间的关系为( )",{"answer":46,"createTime":5,"id":47,"options":48,"question":54,"source":33,"type":34},[],147627908,[49,50,51,52,53],"0.582mol\u002Fkg","11.63mol\u002Fkg","2.91mol\u002Fkg","0.182mol\u002Fkg","5. 82mol\u002Fkg","某含57.0%(m\u002Fm) H2SO4 (其摩尔质量为98.0g\u002Fmol)的溶液,其质量摩尔浓度为( )",{"answer":56,"createTime":5,"id":57,"options":58,"question":64,"source":33,"type":34},[],147627909,[59,60,61,62,63],"400.0mL","200.0mL","500.0mL","100.0mL","300.0mL","今有0.400mol\u002FL的HCl溶液1L,欲将其配制成浓度为0.500mol\u002FL的溶液,需加入1.00mol\u002FL的HCl多少毫升( )",{"answer":66,"createTime":5,"id":6,"options":67,"question":20,"source":33,"type":34},[],[8,9,10,11,12],{"answer":69,"createTime":5,"id":70,"options":71,"question":77,"source":33,"type":34},[],147627911,[72,73,74,75,76],"0.15","15.0","1.5","5.0","10.0","某浓氨水的密度(25.C)为0.90g\u002FmL,含NH3的量为29%(m\u002Fm),则此氨水的物质量浓度(单位:mol\u002FL)约为( )(已知:NH3的摩尔质量为17g\u002Fmol)",{"answer":79,"createTime":5,"id":80,"options":81,"question":87,"source":33,"type":34},[],147627912,[82,83,84,85,86],"0.2","3","0.03","0.3","0.02","34.2gAl2(SO4)3(其摩尔质量为342g\u002Fmol)溶解成1L水溶液(酸性),则此溶液中SO42-离子的总浓度(单位:mol\u002FL)为( )",{"answer":89,"createTime":5,"id":90,"options":91,"question":97,"source":33,"type":98},[],147627913,[92,93,94,95,96],"易溶解","稳定","最好具有较大的摩尔质量","必须有足够的纯度","物质的组成与化学式完全相符","基准物必须具备下列哪些条件( )",1,{"answer":100,"createTime":5,"id":101,"options":102,"question":107,"source":33,"type":98},[],147627914,[103,104,105,106,93],"只有基准试剂才能用来直接配制标准溶液","物质中杂质含量应低到滴定分析所允许的误差限度以下","物质的组成与化学式相符,若含结晶水,其含量可不考虑","物质的组成与化学式应相符","用直接法配制标准溶液的物质,必须具备下列哪些条件( )",{"answer":109,"createTime":5,"id":110,"options":111,"question":117,"source":33,"type":98},[],147627915,[112,113,114,115,116],"酸碱滴定法是以质子转移反应为基础的一种滴定分析法","按照所利用的化学反应不同,滴定分析法可分为中和法、沉淀滴定法、络和滴定法、氧化还原滴定法等四种","凡能进行氧化还原反应的物质,都能用直接法测定它的含量","适用于直接滴定法的化学反应,必须是能定量完成的反应","反应速度快是滴定分析法必须具备的重要条件之一","下列叙述中,正确的是( )"]