Question

I know that 1:4 acetate; hexane eluting solvent is nonpolar. So what about the 1:2 acetate; hexane eluting solvent? Is it polar or non polar?

When I used 1:4 acetate; hexane eluting solvent, I got that the starting material was more polar from the product because it has a smaller Rf value?

If the eluting solvent changed from 1:4 acetate; hexane to 1:2 acetate; hexane, would the Rf values get larger? smaller? same? Explain why please

Answer 1

acetate is the polar solvent and Hexane is the non polar

if you are saying 1:4 acetate; hexane eluting solvent is nonpolar means

1:2 acetate; hexane eluting solvent will be more polar than 1:4

because you have decreased the non polar part of the mixture

eithere increasing the polar solvent or decreasing the non polar part of the solvent is will increase the polarity of the eluting solvent

when you increse the polarity of the eluting agent Rf value will increase

this is because TLC will work on based on the absorption

compound will stck to the silica gel of the TLC plate

if you the more polar solvent solvent compound intreactions will increase than the compound silica interactions

so compound move from the TLC plate so obviously Rf value will increase