Which of the following molecules will have the highest rf value when studied with thin-layer chromatography using a silica plate?
a. ch3ch2ch2ch2ch3
b. hoch2ch2ch2ch3
c. hoch2ch2ch2oh
d. hoocch2ch2ch3

A. CH3CH2CH2CH2CH3

Explanation:

The silica in the plate is polar and contains hydroxil groups in its surface.

Compound B, C, are polar containing hydroxyl gropus and compound D is a carboxylic acid which is polar. It follows then that these compounds will be retained more strongly than the non polar hydrocarbon compound CH3CH2CH2CH2CH3.

Since the retention factor, Rf, is defined as the distance travelled by the solute divided by the distance travelled by the solvent, we can deduce that compound A. CH3CH2CH2CH2CH3 will travel farthest and have the highest Rf.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

d

explanation: