reaction rate

Beschreibung

Karteikarten am reaction rate, erstellt von Alvaro Vargas Calero am 02/05/2018.
Alvaro Vargas Calero
Karteikarten von Alvaro Vargas Calero, aktualisiert more than 1 year ago
Alvaro Vargas Calero
Erstellt von Alvaro Vargas Calero vor mehr als 6 Jahre
43
0

Zusammenfassung der Ressource

Frage Antworten
Reaction rate The speed of a chemical reaction may be defined as the change in concentration of a substance divided by the time interval during which this change is observed
For a reaction of the form A+B→C , the rate can be expressed in terms of the change in concentration of any of its components
in which Δ[A] is the difference between the concentration of A over the time interval t2 – t1:
Notice the minus signs in the first two examples above. The concentration of a reactant always decreases with time, so Δ[A] and Δ[A] are both negative. Since negative rates do not make much sense, rates expressed in terms of a reactant concentration are always preceded by a minus sign to make the rate come out positive.
Consider now a reaction in which the coefficients are different: t is clear that [B] decreases three times as rapidly as [A] , so in order to avoid ambiguity when expressing the rate in terms of different components, it is customary to divide each change in concentration by the appropriate coefficient:
Zusammenfassung anzeigen Zusammenfassung ausblenden

ähnlicher Inhalt

Tipps zum Erstellen von Mindmaps
max.grassl
Deutsch Einstufungstest Niveau A2.1
SprachschuleAktiv
UML - Diagramme
futurebase
BKF C95 (Fragen der Ziffern 1c, 1d)
Harald Koenig
OEKO UniVie
Magdalena Zöschg
The Commonwealth
Laura D
Pädagogik Abitur 2016: Erziehung im Nationalsozialismus
Lena S.
GESKO A WERB WS 2018/19
Caroline Hannah
MS-4 Tutorium 25.11.-1.12.2019
Lukas Imwalle
Vetie Geflüglekrankheiten altfragen 2020
Taissa Fraga de Almeida
Vetie - Spezielle Pathologie 2021
Svea Schill