Interpretation:
The characteristics of the liquid stationary phase should be stated.
Concept introduction:
Gas chromatography is efficiently used for the compounds that have high vapor pressures which allow them to pass through a GC column.
A gas chromatography does not identify compounds if unknown samples are loaded into the column. GC is one of type of partition chromatography, where the sample that has to be analyzed get adsorbed on the stationary phase.
The stationary phase is formed by high boiling nonvolatile liquid, usually a
The components of gas-liquid chromatography are as follows:
- High-pressure pure carrier gas source
- Flow controller
- Heated injection port
- Column and column oven
- Detector
- Recording device or data station
Want to see the full answer?
Check out a sample textbook solutionChapter 20 Solutions
Laboratory Techniques in Organic Chemistry
- The density of liquid NH3 is 0.64 g/mL; the density of gaseous NH3 at STP is 0.0007 g/mL. Explain the difference between the densities of these two phases.arrow_forwardThe point on a phase diagram is where three phases of matter exist in equilibrium. The point is where the distinct phase change between liquid and gas stops and an can be formed.arrow_forwardAlong which line would a sample of pure X be a mixture of solid and gas? choose a letter Which is the critical point of X? choose a letter Which is the liquid one-phase region? choose a letterarrow_forward
- WRAP-UP Direction: Complete the table by writing the differences of the phase diagrams of water from that of carbe dioxide. Water Carbon dioxide Phase present at 1 atm The siope between solid and liquid boundaryarrow_forwardUsing a phase diagram to find a phase transition temperature or pressure.arrow_forward6. Label the blank phase diagram with the three phases, the six phase changes, and the two points. Cometime solid gas Hqmdarrow_forward
- What is phase transition?arrow_forwardA. At what temperature and pressure do the gas and liquid phases become indistinguishable from each other? B. If i had a quantity. of this substance at a pressure of 1.25atm and a temperature of -100C, what phase change(s) would occur if i increased the temperature to 600C? What temperature(s) would they occur?arrow_forwardBelow is the phase diagram for carbon dioxide. pressure (105 Pa) 10000 solid 1000 100 10 1 3 liquid supercritical state critical point gas triple point 200 250 300 400 http://phucperiments.eu/ are the conditions in which carbon dioxide sublimates are the conditions in which carbon dioxide melts [Select] [Select] At 100 Pa and 270 K, carbon dioxide is a [Select] 350 temperature (K)arrow_forward
- The fragment of H2O phase diagram is shown. A) What transition (e.g. liquid--> solid, solid-->gas... or none) would be observed when a sample of H2O initially at 0.003atm and -5 C is heated at constant pressure to 50 C? B) How many phases coexist at point with T = 100 oC and p = 1 atm?arrow_forward6. Consider this diagram in which ethyl acetate is contained in a container with a piston. If the system is maintained at 50°C describe what happens inside the cylinder when the piston is withdrawn. Be brief. vapour liquidarrow_forwardLabel the features of the phase diagram. Pressure (not to scale) liquid-gas equilibrium triple point Pc Answer Bank supercritical fluid solid-gas equilibrium liquid solid-liquid equilibrium Temperature (not to scale) gas critical point T solid Tcarrow_forward
- Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax