Chromatography TLC Plate Analysis

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What percentage of the TLC plate is visible?

36%

41% (correct)

46%

31%

What is the code 'Vodafone 36 Vodafone 46 Ο Δ' referring to on the TLC plate?

Brands (correct)

Chemical compositions

Experimental procedures

Temperature conditions

What does the number '8173834' represent in SDOC-AABC8173834...?

Temperature reading

Unique identifier (correct)

Timestamp

Laboratory location

At what position is the SDOC-AABC8173834... located on the TLC plate?

Middle Signup and view all the answers

From which points can the TLC plate be viewed?

Top and bottom Signup and view all the answers

What is a recommended technique to keep spots small and compact during solvent evaporation?

Applying the sample all at once Signup and view all the answers

Why is it advised to use cold or hot air during solvent evaporation?

To evaporate the solvent Signup and view all the answers

If a sample is applied all at once without any drying time in between, what might happen?

The spots will diffuse Signup and view all the answers

What could be a consequence of not allowing any drying time between sample applications?

Increased risk of spot diffusion Signup and view all the answers

In what way does applying a sample in several portions impact the final outcome?

It helps in keeping the spots small and compact Signup and view all the answers

What kind of stationary phases are typically used for achieving good separation?

Polar Signup and view all the answers

Which type of mobile phases is recommended for achieving good separation?

Low polarity Signup and view all the answers

What is a key characteristic of the stationary phases used for achieving good separation?

Fairly polar Signup and view all the answers

Which type of mobile phase would likely not be effective for achieving good separation?

Highly polar Signup and view all the answers

How does using hexane as a mobile phase contribute to separation efficiency?

By maintaining low polarity Signup and view all the answers

What is the primary reason for competition in surface adsorption chromatography?

For the stationary phase adsorption sites Signup and view all the answers

What factor determines the choice of the stationary phase?

Polarity of the target solutes Signup and view all the answers

In surface adsorption chromatography, which components compete for adsorption sites?

Materials to be separated and the stationary phase Signup and view all the answers

What role does the mobile phase play in surface adsorption chromatography?

It facilitates separation by competing for sites Signup and view all the answers

Why is it important to consider the polarity of the target solutes in chromatography?

To optimize the interaction between solutes and stationary phase Signup and view all the answers

How does the polarity of the target solutes influence the choice of stationary phase?

It impacts how well solutes are retained and separated Signup and view all the answers

How does competition for adsorption sites impact the efficiency of surface adsorption chromatography?

It minimizes the resolution of peaks Signup and view all the answers

In chromatography, what role does the polarity of target solutes play in column efficiency?

Improves peak resolution Signup and view all the answers

Which factor determines the success of separation in surface adsorption chromatography?

The strength of interaction between phases Signup and view all the answers

What can happen if the polarity of the stationary phase does not match that of the target solutes?

Decreased retention of solutes Signup and view all the answers