[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fRLw6DbtodQQDMaWumMGxGzZmGeVKKoeTSzyx6F-5ZGo":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2023-06-02 00:01:10",41524678,[8,9,10,11],"pPb=pY′","pPb=pY","pPb′=pY′","pPb′=pY",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},3,"f6e8c2cba8ee25cdd8b5ec64204479f9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcd6aa804f56468e1fa7bc4a2057046b9.png","分析化学","4386cebef46847ef95bd291d43a9775d","6.4 络合滴定法的基本原理","已知Ac- 和Pb2+能形成络合物,在pH=5.5的乙酸缓冲溶液中,用EDTA滴定等浓度的Pb2+至化学计量点时,下列叙述正确的是",[21,26,35],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],41524679,[30,31,32,33],"6.8","7.2","10.0","13.2","在pH=5的六亚甲基四胺缓冲溶液中,用0.02000mol·L-1的EDTA溶液滴定同浓度的Pb2+溶液,化学计量点时,pY值等于(已知pH=5时,lgαY(H)=6.4,lgKPbY=18.0)",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],41524680,[39,40,41,42],"5.0","3.8","1.2","8.8","乙酰丙酮(L)与Zn2+形成络合物的lgβ1,lgβ2分别为5.0和8.8,当溶液中络合物的浓度[ZnL]=[ZnL2]时,pL值应是"]