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Q: Why add sand and anhydrous magnessium sulphate to a leaf during chromatography?
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What are the properties of blue vitriol altered during water of crsytallization?

Blue vitriol is a very obsolete name for the copper(II)sulphate: CuSO4. Don't use in the future this term. Pentahydratated copper(II) sulphate: CuSO4.5H2O - bright blue color After the dehydratation of the above compound we obtain the anhydrous copper(II) sulphate: CuSO4 - pale green color.


Why is it necessary to add anhydrous magnesium sulphate to the alcohol and ether during the sodium test?

Anhydrous magnesium sulfate is a drying agent which removes water molecules which might cause contamination to the product. The high attraction for water molecules was due to the charged Mg2+ and SO42- ions. [2]


What is mobile and stationary phase in Chromatography?

Moblie phase is that phase in chromatography that moves the analyte components along with it. Stationary phase remains static during chromatography.


Who discovered candy chromatography?

Chromatography was discovered by Ms.Felicetti & Sherlynne & Emily In 2011 during the investigation of a Science Fair Project


Why is it necessary to weigh an anhydrous substance with a cover on?

It is important to weigh an anhydrous substance with a cover on because the solid may be lost to the air during the measuring of the weight.


What is the role of anhydrous sulfate?

Anhydrous sodium sulfate is considered as a drying agent. It is used in expirements to remove water from a solution or during an expirement. hope this helps.


Why does the concentration of tin sulphate solution not change during the electrolysis?

Tin Sulphate stays the same during electrolysis because it is low down in the reactivity series, it can only be extracted by the reduction of carbon, not by electrolysis.


Why is it important to avoid air bubbles in the column during chromatography?

It is important to avoid air bubles in the column during chromatography because you get a clearer picture and will see what ishappening alot clearer without problems.


What is chromatography fluid?

It refers to a set of technique used to separate different compounds. So involves separating chemicals and identifying them by color. Various chromatography products are used during the process.


What is mean by isothermal in gas chromatography?

It means that you keep the temperature constant during the entire run


Why you use anhydrous ether during the preparation of Grignard's reagent why not anhydrous hexane?

You should really use anhydrous hexane; however, ethers can absorb large quantities of water; THF is completely miscible with water and will thus require extensive drying in order to get an anhydrous environment. Hexane absorbs very little water due to the unfavourable interactions between it and water. Therefore "non-anhydrous" hexane contains such a small quantity of water that the Grignard reagent formed will more than adequately dry the hexane.


Why does the blue colour remains blue during electrolysis of copper sulphate solution using copper electrodes?

During the electrolysis of Copper sulphate ,at the cathode ,copper and hydrogen both being positively charged migrate towards the cathode.While at the anode