exo and endo and rate of reaction Flashcards
(27 cards)
what factors affect rate of reaction
-surface area
-temperature
-pressure
-catalyst
-concentration
exothermic reaction
a chemical reaction that releases heat to its surroundings
endothermic
a chemical reaction that absorbs heat from its surroundings.
exothermic reaction profile
reactant-up
product-down
activation energy-top of graph to reactants line
overall energy change-reactants line to product line
endo reaction profile
reactant-down
product-up
activation energy-reactants line to top of graph
overall energy change-reactants line to product line
bond breaking in exo diagram
reactants and top of curve
bond breaking in diagram
reactants and top of curve(ENDO)
bond making in diagram
top of curve and product(EXO)
For an endothermic change in which direction do the arrows point?
UP
For an exothermic change in which direction do the arrows point?
DOWN
negative sign in energy change
exo
positive sign in energy change
endo
energy change
product energy minus reactants energy
neutralisation and displacement are
exo
why is displacment exo
formation of new bond in product release more energy than the energy required to break bond
why is neutralisation exo
the energy released from the formation of water is greater than the energy absorbed in the reaction.
catalyst
substances that increases the rate of reaction without being changed or used up
Oxidation
exo
reduction
endo
neutralisation
exo
decomposition
both
displacement
exo
redox
exo
addition
both
