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stationary phase is the solid called the filter paper and mobile phase is the liquid or organic solvent present in the developing tank or beaker by ayesha zulfiqar

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Riley Wolf

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2y ago

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What is stationary phase and mobile phase?

mobile phase is the phase that consist of the analyte and stationary phase is the phase that is standstill


What is a method of separation that employs a system with two phases of matter a mobile phase and a stationary phase?

Chromatography is a method of separation that employs a system with two phases of matter – a mobile phase and a stationary phase. The mobile phase carries the mixture to be separated through the stationary phase, where the components separate based on their interactions with the stationary phase.


What is mobile and stationary phase in Chromatography?

In chromatography, the mobile phase is the solvent that carries the sample through the stationary phase. The stationary phase is the material that interacts with the components of the sample, causing separation based on differences in their affinity for the stationary phase.


What are the differences between reverse phase and normal phase chromatography?

Reverse phase chromatography and normal phase chromatography are two types of chromatographic techniques that differ in the polarity of the stationary phase and mobile phase. In reverse phase chromatography, the stationary phase is nonpolar and the mobile phase is polar, while in normal phase chromatography, the stationary phase is polar and the mobile phase is nonpolar. This polarity difference affects how compounds interact with the stationary phase, leading to differences in separation and elution times.


What is the difference between the stationary phase and the mobile phase in chromatography?

stationary phase stays at the bottom of the paper chromatography while mobile phase is moving on the stationary phase and move on stationary phase till it gets its right place on the top of the paper or somwhere else.


Is toluene is used as mobile phase with alumina as stationary phase?

No, toluene is not commonly used as a mobile phase in chromatography with alumina as the stationary phase. Toluene is more often used as a mobile phase with silica gel or reversed-phase columns. Alumina is typically used with solvents like hexane or ethyl acetate as the mobile phase.


What is the function of the mobile phase for developing a chromatogram?

The mobile phase in chromatography is responsible for carrying the sample through the stationary phase. It helps separate the components of the sample by their different affinities for the stationary phase. The composition and flow rate of the mobile phase can be adjusted to optimize separation.


What are the key differences between reverse phase and normal phase HPLC techniques?

Reverse phase and normal phase HPLC techniques differ primarily in the polarity of the stationary phase and mobile phase. In reverse phase HPLC, the stationary phase is nonpolar and the mobile phase is polar, while in normal phase HPLC, the stationary phase is polar and the mobile phase is nonpolar. This polarity difference affects the retention and separation of compounds in the sample.


Why the retention time will decrease if the polarity of mobile phase increase in normal phase HPLC?

because in normal phase HPLC mobile phase is non polar and stationary phase is polar. Most of the compound of interest are polar, if you increase the polarity of mobile phase compound of analyte will stay in mobile phase and will elute faster and retention time will be shorter.


What are the key differences between HPLC reverse phase and normal phase chromatography techniques?

In reverse phase HPLC, the stationary phase is nonpolar and the mobile phase is polar, while in normal phase HPLC, the stationary phase is polar and the mobile phase is nonpolar. This difference in polarity affects how compounds interact with the stationary phase, leading to variations in separation and elution times.


What is mobile phase?

The mobile phase as indicated is the moving phase. Either the mobile or stationary phase is polar and the other is Non-polar. A common polar phase is Methanol, and non-polar is hexane


What are the differences between reverse phase HPLC and normal phase chromatography techniques?

Reverse phase HPLC and normal phase chromatography are two types of chromatography techniques that differ in the polarity of the stationary phase and mobile phase. In reverse phase HPLC, the stationary phase is non-polar and the mobile phase is polar, while in normal phase chromatography, the stationary phase is polar and the mobile phase is non-polar. This difference in polarity affects the separation of compounds based on their interactions with the stationary phase, leading to different retention times and selectivity in each technique.