Suppose an organic compound has a higher heat conductivity than ...

[cherise1989]

Suppose an organic compound has a higher heat conductivity than the carrier gas. How
  would its GC signal appear on a chromatogram run on an instrument with
  (a) a thermal conductivity detector?
  (b) a flame ionization detector?

Question 2

Alcohols have very long retention times on Carbowax columns. Why? (Hint: Consider the
  polarity of alcohols.)

[orangecrush]

Answer to Question 1

(a) The signal will appear as a dip from the baseline instead of a peak rising from the baseline
because the sample arm becomes cooler (instead of hotter) relative to the feference arm in
the Wheatstone bridge.
(b) The signal will appear as a normal peak because a flame ionizaiton detector is not affected
by thermal conductivity.

Answer to Question 2

Alcohols can form hydrogen bounds with the oxygen atoms in a Carbowax.

[cherise1989]

TY

[orangecrush]

You're welcome