Advanced Higher Chemistry 99 Researching Chem and Practical Skills
Channel: Andrew Hay
Date: 2022-02-28

Around 10 marks in the paper are based on practical knowledge of experiments. If you haven't been able to do these, this video should help to fill in the gaps in your knowledge.
Thanks to Susan for spotting my TLC should be enclosed to ensure solvent vapour saturation.
Gravimetric analysis is here https://youtu.be/2xm7hQkzyUE and volumetric analysis (titration) is here https://youtu.be/qIRMwbnLr7A
Homework: https://www.youtube.com/watch?v=xXvhmnD2r1E
0:00 Intro and Baldrick
1:06 Rogue points
2:25 Accuracy hierarchy
4:15 A Control
6:00 % by mass solution
7:42 % by vol solution
8:51 p.p.m.
10:15 Volumetric analysis
11:30 Gravimetric analysis extra terms
12:36 Colourimetry
17:50 Organic techniques
18:28 A) Refluxing (for Nilavan)
21:28 B) Vacuum Filtration
22:30 C) Recrystallisation
25:57 D) Solvent Extraction
30:40 E) Melting Points and Impurities
34:00 F) Thin Layer Chromatography
38:38 Fin