[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fUGWriSxNT_Kuiwkw-ihSBlMvb-tZJKnGSl_-6bm0Mw0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2026-03-14 09:15:01",323059015,[8,9,10,11],"甲基橙","甲基红","酚酞","中性红",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},22,"6c47e037c8adeb7c61906699cb6a69e4","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5daf309d4e0cca76c9ef42f7bda52c6e.jpg","无机及分析化学","4e28fe4b5a9c4061a91d42ecb7d28763","测试四","用0.2mol\u002FLHCl滴定Na2CO3至第一等当点,此时可选用的指示剂是",[21,32,41,50,53,62,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],323059012,[25,26,27,28],"3.2´10-3","3.2´10-4","3.2´10-5","3.2´10-6","某弱酸型指示剂在pH 2.5时呈红色, pH 4.5时呈黄色 ,其离解常数约为","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],323059013,[36,37,38,39],"0.1mol\u002FL NH4Cl + 0.2mol\u002FL NaOH","0.1mol\u002FL NH3 + 0.2mol\u002FL NH4Cl","0.2mol\u002FL NH3 + 0.1mol\u002FL HCl","0.2mol\u002FL NH4Cl + 0.1mol\u002FL NaOH","下列溶液中不是缓冲溶液的是",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],323059014,[45,46,47,48],"Ka","2Ka","3Ka","4Ka","在一元弱酸HA的水溶液中,已知δHA=3\u002F4,则溶液中[H+] 等于",{"answer":51,"createTime":5,"id":6,"options":52,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],323059016,[57,58,59,60],"0.1mol·L-1苯酚Ka=1.1×10-10","0.1mol·L-1H3BO3 Ka=7.3×10-10","0.1mol·L-1羟胺Kb=1.07×10-8","0.1mol·L-1HF Ka=3.5×10-4","下列弱酸或弱碱能用酸碱滴定法直接准确滴定的是",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],323059017,[66,67,68,69],"[NH3] + [NH4+] = c1+ c2","[H+] + [NH4+] = [OH-] + [NH3]","[H+] + [NH4+] = [OH-] + c1","[H+] + [NH4+] = [OH-] + c2","浓度为 c1 的 NH3 和浓度为 c2 的 NH4Cl 混合溶液的质子条件式为",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],323059018,[75,76,77,78],"M与L的副反应相当严重","M的副反应较小","M与L没有副反应","[M] = [L]","αM(L)=1表示",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],323059019,[84,85,86,87],"KMnO4","K2Cr2O7","KI","淀粉","高锰酸钾法所用的指示剂是",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],323059020,[93,94,95,96],"氧化Fe2+ ","掩蔽Fe3+","除去H2 O","除去过量SnCl2","重铬酸钾法滴定铁的操作中,加入HgCl2 ,主要是为了",{"answer":99,"createTime":5,"id":100,"options":101,"question":105,"source":30,"type":31},[],323059021,[102,103,84,104],"Na2C2O4","H2SO4","MnSO4","氧化还原滴定中可作为自身指示剂的标准溶液有"]