13516130
Descrição
FlashCards por Alvaro Vargas Calero, atualizado more than 1 year ago
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Criado por Alvaro Vargas Calero
mais de 6 anos atrás
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| Questão | Responda |
| what is the enthalpy? | Enthalpy is a thermodynamic property of a system. It is the sum of the internal energy added to the product of the pressure and volume of the system. It reflects the capacity to do non-mechanical work and the capacity to release heat. Enthalpy is denoted as H; specific enthalpy denoted as h. |
| Common units used to express enthalpy are the joule, calorie, or BTU (British Thermal Unit). Enthalpy in a throttling process is constant. | |
| Measuring the change in enthalpy allows us to determine whether a reaction was endothermic (absorbed heat, positive change in enthalpy) or exothermic (released heat, negative change in enthalpy). | |
| Enthalpy Formulas H = E + PV where H is enthalpy, E is internal energy of the system, P is pressure, and V is volume d H = T d S + P d V | To see: https://goo.gl/PXUmUS |
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