Stručni rad

https://doi.org/10.15255/KUI.2016.038

Chemistry in Education:
From Temperature Changes to Reaction Enthalpies

Tajana Preočanin orcid.org/0000-0002-6670-6503 ; Zavod za fizikalnu kemiju, Kemijski odsjek Prirodoslovno-matematički fakultet, Sveučilište u Zagrebu Horvatovac 102a, 10 000 Zagreb
Josip Požar ; Zavod za fizikalnu kemiju, Kemijski odsjek Prirodoslovno-matematički fakultet, Sveučilište u Zagrebu Horvatovac 102a, 10 000 Zagreb
Nenad Raos (ur.) ; Institut za medicinska istraživanja i medicinu rada Ksaverska cesta 2, p.p. 291 10 001 Zagreb

Sažetak

The relationship between internal energy and enthalpy was analysed, stating the reasons why the energy changes accompanying chemical reactions are usually characterized by enthalpy changes instead of internal energy changes. The changes within a system during the course of a chemical reaction were analysed in detail. The calculation of reaction enthalpy from the results of calorimetric measurements were explained.


This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

internal energy; enthalpy; exchange of energy; heat; chemical reaction; chemical education

Hrčak ID:

173729

URI

https://hrcak.srce.hr/173729

Datum izdavanja:

5.2.2017.

Podaci na drugim jezicima: hrvatski

Posjeta: 2.134 *