109459
Beschreibung
Karteikarten von Shell Wood, aktualisiert more than 1 year ago
|
Erstellt von Shell Wood
vor mehr als 11 Jahre
|
|
| Frage | Antworten |
| Define Standard enthalpy change of formation | The enthalpy change when one mole of a pure substance is formed from its elements in their normal physical states under RTP. (298K and 101.325 kPa) |
| Define Standard enthalpy change of combustion | The enthalpy change when one mole of a pure substance is completely burnt in sufficient oxygen under rtp. (298K and 101.325 kPa) |
| ΔH means | Total change in enthalpy |
| Define : Thermodynamics | The science of energy conversion involving heat and other forms of energy especially work. |
| What is the 1st law of thermodynamics? | Energy cannot be created nor destroyed |
| Standard enthalpy of formation. ΔH2 has to be reversed as does the value associated with this arrow. | |
|
Image:
combust.gif (image/gif)
|
Enthalpy of combustion ΔH [products] arrow has to be reverse as does the val |
| What are the conditions of RTP? | 298 Kelvin 101.325 kPa |
| Define activation energy | The minimum energy required to initiate a reaction. |
| How can the activation energy be reduced? How? | Use a catalyst Lowers the Ea of a reaction by utilising different reaction pathways |
Möchten Sie mit GoConqr kostenlos Ihre eigenen Karteikarten erstellen? Mehr erfahren.