Equilibrium Flashcards
Oxidation Number: rules
an element on its own is always…
0
Oxidation Number: rules
group 1 is always…
group 2 is always…
+1
+2
Oxidation Number: rules
sum of oxidation numbers
is equal to charge on ion / compound
Oxidation Number: rules
oxygen is always
-2, except in H2O2
Oxidation Number: rules
H is always…
+1 except in MH (M = metal)
Effect of concentration on Kc and why
no effect, equilibrium will counteract concentration changes
so position of equilibrium won’t change, Kc doesn’t change
Haber process: (5)
- N2 extracted from air
- H2 made from natural gas
- Passed over Fe catalyst at 450°C and 200atm
- condense and remove ammonia
- recycle unreacted N and H
Oxidizing agent
accepts electrons from another reactant
which reduces it
Reducing agent
donates electrons to another reactant
which oxidizes it
Dynamic equilibrium
rate of forward reaction = rate of backward reaction
with the concentrations of reactants and products remaining constant
why maintaining high pressure is expensive
energy required to provide the high pressure
strong pressure vessel is needed
why maintaining high temperature is expensive
energy to provide high temperature
plant able to resist high temp is expensive
