The first two options are \"Mobile\" or \"Stationary\" A student dissolved a com
ID: 521062 • Letter: T
Question
The first two options are "Mobile" or "Stationary" A student dissolved a compound in diethyl ether and prepared an alumina column in order to purify the compound. In this setup, alumina is the _____ phase and the diethyl ether is the _____ phase. While running a column, it is advised not to let the solvent level drop below the top of the stationary phase. Why is this? Air molecules will affect the polarity of the column so that the mobile phase moves through too quickly. Drying out the column may create channels in the alumina that can cause the component band to move at an uneven rate. Drying out the stationary phase of the column may cause some of the mixture to be irreversibly adsorbed. Moisture from the atmosphere can dissolve the stationary phase.Explanation / Answer
Since is packed by alumina, it is stationery phase.
And solutions is made by diethylether, so it is mobile phase
* Drying out the column may create channels in the alumina that can cause the component band to move at an uneve rate.