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Questions and Answers
What is recommended to keep spots small and compact during solvent evaporation?
What is recommended to keep spots small and compact during solvent evaporation?
- Avoiding the use of air for evaporation
- Applying the sample in several portions with intermediate drying (correct)
- Applying the sample in one thick layer
- Applying the sample in one single drop
How can solvent evaporation be accelerated?
How can solvent evaporation be accelerated?
- By using cold air
- By applying a thick sample layer
- By using hot air (correct)
- By avoiding intermediate drying
What should be avoided to prevent diffusing during solvent evaporation?
What should be avoided to prevent diffusing during solvent evaporation?
- Avoiding intermediate drying
- Applying the sample all at once
- Applying the sample in one thick layer (correct)
- Using cold air for evaporation
Which method is NOT helpful in maintaining small and compact spots during solvent evaporation?
Which method is NOT helpful in maintaining small and compact spots during solvent evaporation?
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Why is it better to apply the sample in several portions during solvent evaporation?
Why is it better to apply the sample in several portions during solvent evaporation?
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