Today was a lesson on Separation Techniques. We were given a stack of notes that had slides printed on it to aid us in learning more about it. Today the main focus was on the procedure of Chromatography.
Chromatography
- The more soluble the ink is the faster it will move upwards.
- Mobile phase is the solvent, it shows how fast it travels up the paper.
- More soluble = travel up the chromatography paper faster. Less soluble = travel up the chromatography paper slower.
- Take note that only one drop of ink sample should be placed on the chromatography paper as if too much is placed, it will affect the accuracy and reliability of the results.
- Solvent must be below the pencil line.
- Drop the ink right below the pencil line.
- Solvent front is the maximum height the solvent can travel
* When solvent is heated, the solubility will increase the ink spot will move up.
After that we moved on to Simple Distillation.
- Distillation helps to separate water from other solutes, like salt. It is 100 % pure.
- Distilled water is not good for consumption for human body as our body requires certain combination of salt etc. and cannot be 100% pure.
We were given the task to find out the answers to these questions before our Lab lesson tomorrow. These questions came from observing the diagram of a simple distillation experiment....
- What do you mean by smooth boiling?
- What are solutes?
- Purpose of condenser?
- Purpose of boiling stones?
- The position of inlet & outlet?
- Why is the thermometer placed that way?
We also got back our quiz results :)
Thank you for reading!
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