Share this entry

Share this page

enthalpy

Saltos de línea: en|thalpy
Pronunciación: /ˈɛnθ(ə)lpi
 
, ɛnˈθalpi
 
/

Definición de enthalpy en inglés:

sustantivo

Physics
1A thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. (Symbol: H)
Oraciones de ejemplo
  • Thermogram transition temperatures, enthalpies, and widths at half-height were determined using the software provided with the calorimeter.
  • The internal energy of a system, like the enthalpy, is a state property, so it is fixed when the state of the system is specified.
  • Scanning calorimetry is used as a direct method to reveal the thermodynamic properties of phase transition like transition temperatures and enthalpies.
1.1The change in enthalpy associated with a particular chemical process: most compounds have negative enthalpies of formation
Más ejemplos en oraciones
  • In addition, melting requires significant amounts of extra heat, (in thermodynamic terms, the enthalpy of fusion), to break molecular bonds and cause a phase transition from solid to liquid.
  • The enthalpy, entropy, and free energy changes in the opening reaction of each basepair are determined from the temperature dependence of the exchange rates.
  • First, the volume change and the enthalpy change of the protein can be determined in time domain without temperature variation or solvent variation method.

Origen

1920s: from Greek enthalpein 'warm in', from en- 'within' + thalpein 'to heat'.

Definición de enthalpy en:

Share this entry

Share this page

 

¿Qué te llama la atención de esta palabra o frase?

Los comentarios que no respeten nuestras Normas comunitarias podrían ser moderados o eliminados.

Obtenga más de Oxford Dictionaries

Suscribirse para eliminar anuncios y acceder a los recursos premium

Palabra del día glen
Pronunciación: ɡlɛn
noun
a narrow valley, especially in Scotland or Ireland