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Why do packed columns allow larger liquid gas contact than tray columns?
Wiki User
∙ 14y ago
Conditions favouring tray columns:
- variable liquid and/or vapour loads
- low liquid rates · large number of stages and/or diameter
- high liquid residence time
- dirty service (plate columns are easier to clean)
- presence of thermal or mechanical stress due to large temperature changes which might lead to cracked packings
- exotherms requiring cooling coils inside column
Source:http://www.separationprocesses.com/Operations/POT_Chp02h.htm
Wiki User
∙ 11y ago
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Why do open tubular columns provide greater resolution than packed columns in gas chromatography?
Open tubular columns provide greater resolution than packed columns in gas chromatography because of their large retention time.
What carrier gas is used in packed columns of gas chromatography?
Nitrogen is usually used.
Are molecules in liquids packed loosely or tightly?
Usually a liquid, but some solids, like ice, have the molecules more spread apart, making it less dense than the liquid. If, by "loosely packed," you mean being able to slide past each other, then the liquid is always the answer.
What phase of matter has loosely packed molecules with a distinct boundary?
liquid
Is the density of a liquid greater than the liquid of a gas?
refrase your question, please, especially concerning........liquid greater than the liquid........because the molecules in the liquid are packed closer together than in the gas
Why do open tubular columns provide greater resolution than packed columns in gas chromatography?
Open tubular columns provide greater resolution than packed columns in gas chromatography because of their large retention time.
Difference between tray and packed columns?
Packed column consist of porous substance as a packing in the column which provides contact between the fluids used,while different types of trays are used depending on the ease of separation instead of a packing in a usual tray column.
What carrier gas is used in packed columns of gas chromatography?
Nitrogen is usually used.
A state of matter with particles that have very little space between them?
solid being the most packed :---------------------------------------- liquid being less packed then the solid: - - - - - - - - - - - - gas being less packed then the liquid: - - - - - - The dashes are to give an idea of how tight the particles packed -.-
What is the efficiency of packed columns in gas chromatography?
It is around 4000-6000 plates for a 2 meter column.
What are the columns used in hplc?
* large columns, specifically for packing. * analytical columns, for quantitative analysis, usually accompanied by a UV-vis detector. * Narrow bore columns, for more sensitive analysis * capillary columns, very this silica columns used almost exclusively with GC mass spectroscopy. * packed bed columns. with silica beads. and may have groups attached, e.g. C18.
What element are present in solid liquid and gas state?
in solids molecules are tightly packed in liquid molecules are not so tightly packed whereas in gas they are free to move
How atomes arranged in a liquid?
the atoms in a liquid are loosely packed together. they can move, but they have to move together.
How are atoms arrange in a liquid?
the atoms in a liquid are loosely packed together. they can move, but they have to move together.
Are molecules in liquids packed loosely or tightly?
Usually a liquid, but some solids, like ice, have the molecules more spread apart, making it less dense than the liquid. If, by "loosely packed," you mean being able to slide past each other, then the liquid is always the answer.
What are closely packed and disorganized particles?
That is one of thedescriptive definitions of a liquid.
What phase of matter has loosely packed molecules with a distinct boundary?
liquid
