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    LiCl Boiling Point

    The licl boiling point is the temperature at which LiCl becomes liquid. This is the highest possible temperature that a solution can reach under a given pressure. It is determined by the dipole-dipole forces between ions. These forces are dependent on the charge of the cation or anion and their ionic radius. In the case of LiCl, the cation is alkali metal and its ionic radius is small. Hence the dipole-dipole force is strong. This makes the ionic bonds stronger and harder to break. This can explain why LiCl has a higher boiling point than HCl. But it doesn’t explain why HF has a lower boiling point than H2O. The melting and boiling points of a chemical increase as they go down the group because the molecules get larger, which means more electrons are available to form temporary dipoles. These dipoles create more attraction and therefore require more energy to break their bonds, which increases the energy required to melt or boil a liquid. Similarly, the thermal conductivity of a liquid solution also increases as the molecules get larger. The increase in the thermal conductivity is also caused by the formation of temporary dipoles, which causes more electrons to move between the molecules and therefore requires more energy to conduct heat. The enthalpy change of a liquid is also related to the dilution of the solvent from r1 to r2. It depends on the mass fraction of the solvent, the dilution enthalpy and other required parameters.

    2023-04-20

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    The Boiling Point of DCM

    Boiling point is the temperature at which a liquid vaporizes.

    Unlike melting points, boiling points are not generally used as a gauge of purity, although they are still an important physical property to consider when analyzing a compound.

    The boiling point of a liquid depends on the mole fraction (mass or volume) of each chemical in the mixture. A homogenous mixture of two volatile compounds will boil at a temperature between their respective boiling points. A mixture of acetonitrile and water, for example, has a boiling point of 76.1 oC.

    Distillation, or separating, a solvent by its boiling point is one of the most common organic chemistry methods. Ideally, the lower boiling material will vaporize first and be collected separately from the higher boiling material. However, sometimes this is not possible, such as in the case of a binary azeotrope like acetonitrile and water.

    Vapor-phase DCM, which may be released through various waste streams, is expected to oxidize in the atmosphere by reaction with photochemically produced hydroxyl radicals. The half-life of this reaction in air is estimated to be approximately 119 days.

    DCM is also expected to volatilize from dry soil surfaces. The vapor pressure of DCM is estimated to be very high, and its estimated Koc is 24. This indicates that biodegradation of DCM is possible in soil, but it will probably be very slow compared with evaporation.

    2023-03-23

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