A two-component mixture containing a dicarboxylic acid and tricarboxylaic acid gave only one spot with a Rf value of 0.05 after using hexane as the developing solvent. Indicate what should be done to correct this problem.

um i think it might be a car?

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.