The enthalpy of mixing (also called heat of mixing) is the heat that is taken up or released upon mixing of two (non-reactive) chemical substances. When the enthalpy of mixing is positive, mixing is endothermic while negative enthalpy of mixing signifies exothermic mixing. In ideal mixtures the enthalpy of mixing is null.
A well-known approximation for calculating the heat of mixing is Flory–Huggins solution theory.
Famous quotes containing the word mixing:
“It was not till the middle of the second dance, when, from some pauses in the movement wherein they all seemed to look up, I fancied I could distinguish an elevation of spirit different from that which is the cause or the effect of simple jollity.—In a word, I thought I beheld Religion mixing in the dance.”
—Laurence Sterne (1713–1768)