Can a substance be cooled to a temperature below its freezing point?
Liquids have a characteristic temperature at which they turn into solids, known as their freezing point. In theory, the melting point of a solid should be the same as the freezing point of the liquid. It is possible, however, to cool some liquids to temperatures below their freezing points without forming a solid.
What is the difference between freezing point and normal freezing point?
Freezing point is the temperature at which a liquid becomes a solid at normal atmospheric pressure. The normal freezing point is the temperature at which a substance melts (or freezes) at one atmosphere (760 torr = 760 mm Hg = 14.7 psi = 101.3 kPa) of pressure.
How do you make a 50 mM glucose solution?
-For 1 lt 50 mM high glucose DMEM, you need 44.8 ml of 1 M glucose and 955.2 ml of 5.5 mM DMEM, if you wanna make a solution from a liquid glucose concentration. – Or else simply add 8 g of D-glucose into the 1 L of low glucose DMEM. If you want to avoid to sterilize all media.
Why does glucose have a high freezing point?
Depression in Freezing point is a colligative property that depends on the number of particles in the solution. higher the number of particles in a solution lower is its freezing point. so glucose will have higher freezing point.
Which has highest freezing point and why?
(a) 1M glucose solution has highest freezing point because it has lowest ΔTf.
Does sugar content affect freezing point?
Sugar lowers the freezing point of water, which makes frozen desserts fair game for changes in freezing point. Most desserts freeze between 29.5 to 26.6 degrees F (-1.4 to -3.0 C) depending on the concentration of sugar.
How do solutes affect freezing point?
Freezing point depression is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent. When a substance starts to freeze, the molecules slow down due to the decreases in temperature, and the intermolecular forces start to take over.