Three students are asked to discuss the sources of error that might have affected the outcome of the lab. Select the student that employs correct scientific reasoning.Student 1: If the spot was placed below the solvent level, this would cause the sample to be dissolved into the solvent pool before traveling up the plate.Student 2: If the solvent used has the opposite polarity of the stationary phase this will cause unequal movement of the sample.Student 3: If the developing chamber was closed too quickly than the sample wouldn't be able to travel on the TLC plate.

Adsorption is the property of how well a component of a mixture clings to the stationary phase, whereas solubility is the quality of how well a component of a mixture dissolves in the mobile phase.
The greater the adsorption to the stationary phase, the slower the molecule will move across the column. Three students are asked to discuss the sources of error that might have affected the outcome of the lab therefore the student that employs correct scientific reasoning is Student 1.
This is referred to as a facility that provides controlled conditions for scientific experiments, research etc. it contains different tools and equipment such as microscope, beaker etc which helps to obtain accurate results.
The student that employs correct scientific reasoning is Student 1 as he considers if the spot was placed below the solvent level, it would cause the sample to be dissolved into the solvent pool before traveling up the plate which is the error.
During the process of Thin-layer chromatography, it should be placed in such a way that only the lower edge of the plate touches the solvent which is therefore the correct choice.

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