Effect of Solvent Type

Effect of Solvent Type

Not all solvents will expand to the same volume under a set of conditions. The volume of the expanded gas from a liquid of known volume and density can be calculated from the ideal gas law. It is important to remember that the volume gas will increase as the molar mass decreases. This is one of the reasons why water is a very difficult solvent. Water will expand to three - four times the volume compared with methylene chloride. In the above example, if the volume of the liner is less than 0.90 ml, backflash will occur. What do we mean by this? Backflash occurs when the volume of the liner is not sufficient to handle the expanded gas volume.

Effect of Solvent Type


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