Heat of dilution - Kishakunets

The heat released or absorbed when a solution of a certain concentration is diluted by adding more solvent. The magnitude of the heat of dilution is related to the concentration of the solution, and is smaller the lower the solute concentration. Heat of dilution can be expressed as integral heat of dilution and differential heat of dilution. Integral heat of dilution is the total amount of heat that enters or leaves when a solution of a certain concentration containing 1 mol of solute is diluted to a different concentration by adding solvent, and differential heat of dilution is the amount of heat that enters or leaves when 1 mol of solvent is added to a large amount of solution of a constant concentration.

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

ある濃度の溶液にさらに溶媒を加えて希釈するときに放出または吸収する熱．希釈熱の大きさはその溶液の濃度に関係し，溶質濃度が小さいほど小さい．希釈熱の表現には積分希釈熱と微分希釈熱とがある．積分希釈熱は，1 mol の溶質を含むある濃度の溶液に溶媒を加えて別の濃度に薄めるときに出入する全熱量で，微分希釈熱は，一定濃度の大量の溶液に溶媒1 mol を加えたときに出入する熱量である．

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