Class 4 Flashcards
Can you detect/isolate an intermediate? And a transition state?
Intermediates CAN be detected/isolated. Transition states CANNOT
What is the rate law for the overall process of a multi-step reaction?
The rate law for the rate-limiting step
If the concentrations have changed but the reaction rate has not, what can we assume?
The reactant that has changed in concentration and rate has not been affected, must be zero order.
If you double the concentration of a subject and the rate doubles, what rate order is this?
1 (first)
If the rate changes by MORE than the same factor that the concentration was increased, what rate order is this?
2 (second)
Is the rate constant (k) roughly equivalent to the probability of a reaction?
Yes
What two things can change the rate constant?
Temperature and catalysts
The rate constant is _______ proportional to temperature
directly
The rate constant is _________ proportional to activate energy (Ea)
indirectly
Is the rate constant affected by the concentration of the reactants?
NO!
Do solids or solvents affect equilibrium or rate constants?
No
What is the ONLY thing that can change the position of equilibrium, K?
Temperature
K = ?
concentration of pdts over concentration of reactants at equilibrium
What does it mean when Q = K?
You are in equilibrium; no change
What does it mean when Q > K?
Numerator is large; too much product -> will shift toward reactant
