Haber Process Flashcards
is the haber process exo or endo-thermic
exothermic
ideal conditions for haber process- Temp./Pressure/Catalyst
- 450 degrees
- 200 atmospheres (psi)
- Iron catalyst
why don’t we use a higher pressure
high pressure favours side with least number of moles, so high pressure would moves equilibrium to RHS(right hand side) which gives a bigger yield of NH3
why don’t we use a lower temperature in the haber process
low temp. shifts equilibrium to RHS in exothermic reactions so it gives a bigger yield of NH3. However too low is too slow, so a temp. of 450 is used
what does the finely divided iron catalyst do
it speeds up the reaction
what does the finely divided iron catalyst not do
shift the position of equilibrium- it only speeds up BOTH the forward AND backward reaction rates by the SAME AMOUNT
what is special about a catalyst
they are not used up in reactions
What is the haber process
N2+3H2–> 2NH3
