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Questions and Answers
What is the purpose of the stationary phase in paper chromatography?
What is the purpose of the stationary phase in paper chromatography?
- To separate the components of the sample based on their affinity for the stationary phase (correct)
- To facilitate the movement of the sample along the paper
- To hold the sample in place
- To react with the sample and produce color changes
Why is it important to ensure that the solvent front does not reach the top of the paper in paper chromatography?
Why is it important to ensure that the solvent front does not reach the top of the paper in paper chromatography?
- To prevent overdevelopment of the chromatogram (correct)
- To prevent the sample from escaping the paper
- To ensure that the components of the sample are well-separated
- To avoid contamination of the sample
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Study Notes
Paper Chromatography
- The stationary phase in paper chromatography is a porous material, typically paper, that separates the components of a mixture based on their differing affinities for the stationary phase and the mobile phase (solvent).
- The stationary phase acts as a medium for the separation of components, allowing them to interact and differentiate according to their properties.
Importance of Controlling the Solvent Front
- Ensuring the solvent front does not reach the top of the paper is crucial in paper chromatography to prevent the separated components from being washed off the paper.
- If the solvent front reaches the top, it can cause the components to mix again, leading to a loss of separation and inaccurate results.
- Controlling the solvent front allows for a clear and distinct separation of components, making it easier to identify and analyze the components of a mixture.
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