kinetic and rate Flashcards
activation energy
is the min energy required for the reaction to occurs
increasing concentration
- increase in number of reactant partical in given volume
- frequency increase
- more successful collision in given time
increase in surface area
increase in number of partical
- increase in frequency collision
more successful collision
increase the pressure
increasing the number of molecules in the same volume
- a high volume=lower pressure
a low volume = high pressue
increasing the tempeture
- partical has a higher KE energy
- more partical with energy greater activiation energy
- many more successful collision
maxwell boltzmann distrubtion features:
- no partical with zero energy
- area under curve = total number of particales
-peak = most porbable energy - ## only partical with energy greater than or equal to Ea can ract when collsion occurs
what happens when maxwell curve at lower temperture
- peak goes up ,shift to the left hand side , finshes under the orginal
- no of partical Ea=lower
value of most porable =lower
no of most porable energy=higher
mean energy = higher
area = same
maxwell distrubution curve at higher temperture
- peak is lower ,shift hand side ,finished higher the orginal
- no. of Ea = higher
- most porable energy=high
- no.of moleules with most porable energy = lower
- no. of mean energy molcules= lower
area= same
catalyst and how it work
- is a substance that increase the rate of reaction but its unchanged
- provides an alternative route whoch lower activation energy
increasing the number of molecules
same
- Emp
- Mean energy
- area
increases
- no of molcules with Ea
- no. of molecules with Emp
- molecules with mean energy
adding a catalyst
- increases the no. of mlecules with energy greater or equal to activation energy
order
is the power of concentration terms in the rate of reaction
order
is the power of concentration terms in the rate of reaction
