[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fsm-ENpYudNV7290MDvu6UUymwb1NTqip9ci7Rz3Yodk":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":13,"related":14,"source":20,"type":21},[],"2024-06-21 01:20:58",994697453,[8,9],"对","错",{"courseImg":11,"courseName":12},"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F7c9ab6572fe3c7bdef561e7ae5538119.jpg","[共享课]有机化学实验Ⅰ","‌蒸馏可以从工业酒精中分离得到高纯度乙醇.( )",[15,22,25,36,45,50,55,64,69,78],{"answer":16,"createTime":5,"id":17,"options":18,"question":19,"source":20,"type":21},[],994697440,[8,9],"萃取时,溶剂只要与待萃取溶液不相溶即可.( )","v2",3,{"answer":23,"createTime":5,"id":6,"options":24,"question":13,"source":20,"type":21},[],[8,9],{"answer":26,"createTime":27,"id":28,"options":29,"question":34,"source":20,"type":35},[],"2024-06-21 01:20:57",994697459,[30,31,32,33],"减压蒸馏","水蒸气蒸馏","分馏","常压蒸馏","某些沸点较高的有机物在受热时,温度还未达到沸点就已经发生分解,通常采用( )对其进行分离",0,{"answer":37,"createTime":27,"id":38,"options":39,"question":44,"source":20,"type":35},[],994697466,[40,41,42,43],"冷却水蒸气","罩住滤纸上的小孔","使升华的气体凝结","防止蒸发皿炸裂","在咖啡因提取的升华装置中,倒置的玻璃漏斗的作用( )",{"answer":46,"createTime":5,"id":47,"options":48,"question":49,"source":20,"type":21},[],994697468,[8,9],"在分馏柱中,高沸点组分随着热蒸汽逐渐上升,直至分离出来.( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":54,"source":20,"type":21},[],994697470,[8,9],"薄层色谱中,某物质的比移值只与该物质的结构有关.( )",{"answer":56,"createTime":27,"id":57,"options":58,"question":63,"source":20,"type":35},[],994697473,[59,60,61,62],"红外光谱的样品可以是任意固体、液体、气体物质","红外光谱采集样品前,需要先采集背景","研磨固体样品时,需在红外灯烘烤下进行,以免样品吸湿后产生水的吸收峰干扰","红外光谱制样时,将固体试样与纯KBr按照合适的比例混合并研细后,在压片机上压成透明或半透明薄片即可进行测试","以下关于红外光谱的描述错误的是( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":68,"source":20,"type":21},[],994697484,[8,9],"用索氏提取器时,提取筒内所装固体的高度应高于虹吸管最高点.( )",{"answer":70,"createTime":27,"id":71,"options":72,"question":77,"source":20,"type":35},[],994697491,[73,74,75,76],"水","乙酸","有色杂质","固体杂质","乙酸乙酯中含有( )杂质时,不能用简单蒸馏的方法提纯乙酸乙酯",{"answer":79,"createTime":27,"id":80,"options":81,"question":86,"source":20,"type":35},[],994697494,[82,83,84,85],"2-3滴\u002F秒;1滴\u002F2-3秒","2-3滴\u002F秒;1-2滴\u002F秒","1滴\u002F2-3秒;1-2滴\u002F秒","1-2滴\u002F秒;1滴\u002F2-3秒","水蒸气蒸馏和蒸馏时的蒸馏速度分别是( )"]