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Help them to make links to different situations and processes where the same techniques are used, eg a separating funnel is used whenever we have two immiscible liquids we want to separate. There are multiple steps involved in this practical providing a good opportunity for learners to practice a number of experimental techniques and procedures. The whole purification process is generally more complex and involved than the preparation in the first place and learners should understand why the idea of purification is so important when creating chemical compounds – link to real-world examples such as preparation of medicines. This practical takes learners through the stages of preparation, separation and purification of an organic liquid.
#USING LIQUID NOTES FOR LIVE HOW TO#
Teacher notesįull teacher notes are available in the supporting resources booklet, including ideas for how to use this video and the supporting resources as part of your teaching. Practice a wide-range of experimental techniques while preparing an organic liquidĬhapter titles: 00:10 Introduction and overview 01:08 Preparation: combining concentrated hydrochloric acid with 2-methylpropan-2-ol 02:07 Separation: removing the aqueous layer using a separating funnel 03:10 Purification: first, sodium hydrogen carbonate solution is added to remove unreacted hydrochloric acid 04:43 Then solid anhydrous sodium sulfate (drying agent) is added to remove any trace amounts of water 05:25 Finally, distillation separates the sample from any remaining reactant. RSC Yusuf Hamied Inspirational Science Programme.Introductory maths for higher education.The physics of restoration and conservation.