Key Equations Flashcards
1
Q
Kinetic energy Ek
A
= 1/2 mv2
2
Q
The change in internal energy ∆E
A
= Efinal - Einitial
3
Q
Relates the change in interal energy to heat and work (the first law of thermodynamics) ∆E
A
= q + w
4
Q
The work done by an expanding gas at constant pressure w
A
= -P∆V
5
Q
Enthalpy change at constant pressure ∆H
A
= ∆E + P∆V = qp
6
Q
Heat gained or lost based on specific heat, mass, and temperature change q
A
= Cs x m x ∆T
7
Q
Standard enthalpy change of a reaction ∆Hºrxn
A
= Σn∆Hºf(products - Σm∆Hºf(reactants)
