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What would happen if the solvent is above the level of initial sample spots?
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What would happen if you submerge the chromatography paper above the pencil line?
Try and see: if it wouldn't be above the level of solvent, the spots will run off.
How is paper used in paper chromotagraphy?
Paper chromotagraphy is a technique of separating a solution containing two or more soluble solids. A minute amount of the solution is first dotted on a piece on paper. The paper is then hung above a solvent (such as water or ethanol) just so that the tip of the paper is soaked in the solvent.The solvent then rises upwards and soaks the rest of the paper. This occurs because there is a force of attraction between the solvent and the paper.As the solvent rises, it carries the sample of the initial solution and separates the dissolved solids. The multiple different solids settle at different points on the paper, based on its solubility.The point at which the solvent stops rising upwards is known as the solvent front.
Why must the level ofthe solvent not reach the pencil line where the spots are?
if it wouldn't be above the level of solvent the spots will run off
What operations usually makes a substance dissolve faster in a solvent crushing the substance to a powder agitation raising the temperature or all the above?
all of the above
Why is the mixture placed above the level of the solvent in chromatography?
If not, the mixture would just soak out into the liquid in the tank.
What would happen if you submerge the chromatography paper above the pencil line?
Try and see: if it wouldn't be above the level of solvent, the spots will run off.
How is paper used in paper chromotagraphy?
Paper chromotagraphy is a technique of separating a solution containing two or more soluble solids. A minute amount of the solution is first dotted on a piece on paper. The paper is then hung above a solvent (such as water or ethanol) just so that the tip of the paper is soaked in the solvent.The solvent then rises upwards and soaks the rest of the paper. This occurs because there is a force of attraction between the solvent and the paper.As the solvent rises, it carries the sample of the initial solution and separates the dissolved solids. The multiple different solids settle at different points on the paper, based on its solubility.The point at which the solvent stops rising upwards is known as the solvent front.
Why is it important that the sample spots are not below the solvent level when the filter paper is first placed in the developing chamber?
By placing the spot above the level of the solvent in the beaker, you slow the flow of solvent which results in improved separation of the components in the spot. If you placed it below the level of the solvent in the beaker, the solvent would just flow at a much faster rate and instead of separating the components in the spot, they would simply be washed away.
Which solution will have more gas dissolved in it?
The solubility of a gas in a solvent is directly proportional to the partial pressure of that gas above the solvent.
Why must the level ofthe solvent not reach the pencil line where the spots are?
if it wouldn't be above the level of solvent the spots will run off
What are the steps to making solvent extraction?
The following steps to be taken in solvent extraction 1.Take out the sample, filtrate it and measure the density. Analysis to be done for the metal/component which is to be extracted. If more components are presented then analysis to be done for all components 2.Select the solvent which is suitable for the sample 3.Prepare solvent with diluents or modifiers 4.Measure the solvent density 5.Both solvent and sample densityies should not be same 6.Take measured quantity of sample and solvents in a separating funnel 7.Shake it 5-10 minutes or until equilibrium achieved 8.After equilibrium achieved separate the organic and aquous layers in to separate beakers 9.Analysis to be done for the metal/component which is to be extracted. If more components are presented then analysis to be done for all components 10.This analysis to be done in raffinate. 11.In extract layer do the stripping and and separate the solvent. 12.Mutual solubilito be calculated in extract and raffinate layers 13.The analysis described above is to be followed for stripped solution also. 14.The stripped organic to be analyzed and re use it. 15.Calculate the loading capacity of organic 16.Calculate the selectivity 17.Using date draw the equilibrium diagram 18.Calculate the stages required using Mc Cabe diagram
What would happen if the beaker is left uncovered during the development of the chromatogram?
Bad things happen. The mobile phase evaporates and thus it's composition changes. The vapor phase above the chromatogram is not saturated or at equilibrium, and this affects the movement of the sample on the solid phase.
Which information is needed to find the time a projectile is in motion?
The object's initial distance above the ground The object's initial velocity
What operations usually makes a substance dissolve faster in a solvent crushing the substance to a powder agitation raising the temperature or all the above?
all of the above
What is the point at ground level right above the initial eruption?
i think the focus
What does it mean when final and initial velocity are the same?
Please help me I am the above person :(
What is a solution and a solvent?
Solution - a homogeneous, molecular mixture of two or more substances. Salt water is a solution of salt and water. Solvent - a substance that dissolves another to form a solution. In the above example, water is the solvent that salt is dissolved into to form salt water.
