11.  For the reasons given above, the vapour will be richer in the more volatile component.

12.  The vapour produced is richer in the more volatile component A.

13.  At the boiling point, this vapour and the liquid are in equilibrium.

14.  As the vapours rise in the column through each successive equilibrium, they become richer in the more volatile component.

15.  At the same time, the liquid in the flask becomes richer in the less volatile component and consequently its boiling point increases.

16.  As with transportation, defense orders are among the most volatile components of the gauge.

17.  Defense and transportation orders are among the most volatile components of the report.