kinetics(p2) Flashcards
What equation is for the rate of reaction?
Rate= change in conc/ time OR change in mass of product or reactant over time
what effect does increasing the temperature have on the rate constant?
increasing the temperature, increases the ROR as particles have more energy therefore a higher chance of successful collisions, providing that theyre in the correct orientation therefore inc the rate constant
give the arrhenius equation
K= Ae to the power of Ea/RT
give the 5 components of the arrhenius equation and their units
- K
-Ae
- Ea
-RT
K= rate constant
Ae= arrhenius constant
Ea=activation energy (J)
R= gas constant
T=temperature(K)
give the rearranged arrhenius equation
Ink=InA- Ea/RT (taken natural log of both sides)
what does the arrhenius equation tend to do?
how the rate constant links to temperature and activation energy
what effect does increasing the activation energy have on the rate constant?
decreases the rate constant as less particles have sufficient energy for a successful collision to occur
give the rearranged equation of the arrhenius equation creating Ea as the subject
Ea= (Ina-InK) x RT
what does the collision theory state?
particles must collide with sufficient energy and in the right orientation ot react
define activation energy
minimum amount of kinetic energy required fro a reaction to occur
draw an energy profile includ. the effect of a catalyst and label
draw the original maxwell boltzman curve and label
draw the maxwell bolzman curve and the effect of increasing the temperature
draw the maxwell boltzman curve and the effect of decreasing the temperature on the curve
why does temperature increase the rate?
higher temperature means the particles has higher kinetic energy and frequently collide. TF: small incr in temperature can lead to a large change in rate.
