迫套 Experimental purpose 1. Learn how to install gas absorption device 2. Master the method of extracting, washing and separating liquid with a separating funnel 3. Master the method of drying liquid organic compounds with desiccant 4. Synthesis of 1-bromobutaneExperimental purpose 1. Learn how to install gas absorption device 2. Master the method of extracting, washing and separating liquid with a separating funnel 3. Master the method of drying liquid organic compounds with desiccant 4. Synthesis of 1-bromobutane