[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fr4qszWQocMON9E8R_8-1KrtjAb-GeZW7Z9MKgPEn06I":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":21,"type":22},[],"2026-05-30 22:44:32",393618517,[8,9,10,11],"1","3","5","6",{"courseId":13,"courseImg":14,"courseName":15},"b0a69a972d6a86e51a70f6082d249caf","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c1e48361b00f3ee2086f4e259ed792b.jpg","分析化学智慧课程","EDTA与金属离子络合时形成五元环的数目是",[18,23,32,41,50,59,68,77,86,95],{"answer":19,"createTime":5,"id":6,"options":20,"question":16,"source":21,"type":22},[],[8,9,10,11],"v1",0,{"answer":24,"createTime":5,"id":25,"options":26,"question":31,"source":21,"type":22},[],393618518,[27,28,29,30],"H6Y2+","H4Y","H2Y2-","Y4-","直接与金属离子配位的EDTA型体为",{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":21,"type":22},[],393618519,[36,37,38,39],"1︰1","2︰1","1︰3","1︰2","一般情况下,EDTA与金属离子形成的配合物的配位比是",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":21,"type":22},[],393618520,[45,46,47,48],"H3Y","H2Y","HY","Y","已知EDTA的六级解离常数Ka1、Ka2…Ka6分别为10-0.9,10-1.6,10-2.0,10-2.67,10-6.16,10-10.26,在pH=12.0的水溶液中,主要存在形式是",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":21,"type":22},[],393618521,[54,55,56,57],"酸效应系数越大,配合物的稳定性愈大","酸效应系数愈小,配合物的稳定性愈大","pH值愈大,酸效应系数愈大","酸效应系数愈大 ,配位滴定曲线的pM突跃范围愈大","在配位滴定中,下列有关酸效应叙述正确的是",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":21,"type":22},[],393618522,[63,64,65,66],"M与L没有副反应","M与L的副反应相当严重","M的副反应较小","[M]=[L]","αM(L)=1表示",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":21,"type":22},[],393618523,[72,73,74,75],"lgK´MY≥5","lgK´MY≥6","lgK´MY ≥7","lgK´MY ≥ 8","当允许误差Et≤±0.1%, cM = 0.01mol·L-1时, 单一离子准确滴定的要求",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":21,"type":22},[],393618524,[81,82,83,84],"游离指示剂的颜色","EDTA-M配合物的颜色","指示剂-M配合物的颜色","上述A+B的混合色","用EDTA直接滴定有色金属离子M,终点所呈现的颜色是",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":21,"type":22},[],393618525,[90,91,92,93],"指示剂与金属离子生成的配合物不稳定","被测溶液的酸度过高","指示剂与金属离子生成的配合物稳定性小于MY的稳定性","指示剂与金属离子生成的配合物稳定性大于MY的稳定性","配位滴定中,指示剂的封闭现象是由( )引起的",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":21,"type":22},[],393618526,[99,100,101,102],"指示剂不稳","MIn溶解度小","K MInˊ< K MYˊ","K MInˊ> K MYˊ","产生金属指示剂的僵化现象是因为"]