Rates Of Reaction Flashcards
What is kinetics
Study of rated of chemical reations - how quickly changes happen
What does ΔG show
Wether a reaction will occur spontaneously or not and to what extent
If ΔG > 0
No change in the thermodynamic driving force and no change over time
If ΔG < 0
Reaction will occur spontaneously
System moves towards equi
What can make something a reversible reaction
The difference between the barrier of forward and reverse reaction
Most pharmaceutical formulations are……
Thermodynamically unstable but kinetically stable
Transition state
The high energy state between products and reactants
Rae of reaction can be calculated from
Decrease in concentration of reactants with time and increase in concentration of products with time
Rate laws
Reaction rates are usually proportional to the concentrations of the reactants realised to a simple power
Elementary reactions
Reactions that happen in a single step
Molecularity
The number of molecules involved in an elementary reaction
What does the rate of an elementary reaction depend on
Concentration of reactants and how often can molecules cross the barrier
1st order
Reaction rate is proportional to concentration of a single reactant
0 order
Reaction rate is independant of reactant concentrations and is constant
2nd order
Rate is squared the concentration Change
