Advertisements
Advertisements
प्रश्न
What criterion is followed for the selection of the stationary phase in chromatography?
Advertisements
उत्तर १
The stationary phase is selected in such a way that the components of the sample have different solubilities in the phase. Hence, different components have different rates of movement through the stationary phase and, as a result, can be separated from each other.
उत्तर २
A material that has a strong ability to absorb contaminants should be used as the stationary phase. Additionally, the stationary phase should have a higher capacity to adsorb contaminants than the element that needs to be cleaned. This will make it easier for the element to elute.
संबंधित प्रश्न
Name the method of refining of metals such as Germanium.
Explain the principle of the method of electrolytic refining of metals. Give one example.
Explain column chromatography.
Out of PbS and PbCO3 (ores of lead), which one is concentrated by froth floatation process preferably?
Write the principle behind the following methods of refining:
Vapour-phase refining
Zone refining is based on the principle that ______.
Why is an external emf of more than 2.2 V required for the extraction of \[\ce{Cl2}\] from brine?
Write two basic requirements for refining of a metal by Mond process and by Van Arkel Method.
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Electrolytic reduction method is used for the extraction of ______.
Refining using liquation method is the most suitable for metals with ______.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
