enthalpy
A measure of the heat content of a chemical or physical systemA measure of the heat content of a chemical or physical system.
» Trying to determine enthalpy simply from a chemical equation is difficult.
Meaning
1 senses(countable, physical, uncountable)A measure of the heat content of a chemical or physical system.
H=U+pV, where H is enthalpy, U is internal energy, p is pressure, and V is volume.
Enthalpie
энтальпи́яentalʹpíja
- (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
Examples
1 sentencesTrying to determine enthalpy simply from a chemical equation is difficult.
Translations
7 languagesBy meaning 1
By meaning 1
Origin
From Ancient Greek ἐν- (en-, “in”) + θάλπω (thálpō, “to warm”). Coined by Dutch physicistFrom Ancient Greek ἐν- (en-, “in”) + θάλπω (thálpō, “to warm”). Coined by Dutch physicist Heike Kamerlingh Onnes, but first used in print by J. P. Dalton in 1909 in a paper titled "Researches on the Joule-Kelvin-effect, especially at low temperatures".
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Forms
plural: enthalpies| Singular | enthalpy |
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| Plural | enthalpies |
regular
Synonyms
3 synonyms- (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure:heat contenttotal heatH
Word family
3 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable