Reaction Energetics Flashcards
Energy change =
Energy in - Energy out
Energy needed to break bonds in reactants is LESS than the energy released by bond formation. Energy is released to the surroundings.
EXOTHERMIC
Energy needed to break bonds in reactants is MORE than the energy released by bond formation. Energy is taken in from the surroundings.
ENDOTHERMIC
KE=RT
R= gas constant
Q= mc^t
C= 2.14
Enthalpy change =
Triangle H
q divided by n
How do you get a more accurate temperate change?
Bomb calorimetry Insulated Oxygen Stirrer Thermometer
Rate=
Change in conc over change in time
Reaction rate on a graph is calculated by…
Drawing a tangent to the curve
A reaction can only occur when the energy of collision has
Sufficient energy
Ea =
Minimum energy that a particle must have in order m to overcome the barrier
Rate can be increased by:
Increase conc of solution
Increase SA of solid
Increasing temp
Catalyst- reduce Ea
rate= [A]2 x [B]
At constant B, doubling A will
Quadruple reaction rate
Rate- [A]2 x [B]
At constant A, doubling B will
Double reaction rate
Rate= [A]2 x [B]
Doubling both…
X8 increase
