Answer 1:
Salt comprises two ions, sodium (+) and
chloride (-) in a 1:1 ratio. This ionic character
is what allows salt to dissolve in polar liquids
such as water, and keeps it from dissolving on
non-polar liquids such as oil. When salt is
dissolved in water, it lowers the freezing point
(below 32 degrees F or 0 degrees C) due to
interrupting the molecular forces between the
water molecules. However, as it does not dissolve
in most oils, I would not expect it to lower the
freezing point, or really interact at all with the
oil. I am not sure where you heard that salt keeps
oil from freezing, but I am not familiar with this
at all. |
