Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

The Haber process


The Haber process is the manufacture of what? Ammonia
what two elements are needed to create ammonia? nitrogen and hydrogen
How can nitrogen be obtained? from the air.
how can hydrogen be obtained? from natural gas or the cracking of hydrocarbons
Is the reaction reversible or irreversible? reversible
the equilibirum position can be shifted to the right hand side to produce a: a high yield of ammonia
what conditions must be used in order to obtain a HIGH yield of ammonia? low temperatures but high pressures
However, what's wrong with using low temperatures? the reaction is very slow
so, what's the compromise to produce a high yield? 450 degrees celcius
Also, what's wrong with using high pressures (and why)? Very expensive as lots of energy would be required to compress the gases.
so, what's the compromise? pressure of 200atms is used.
at 450 degrees, the reaction is still: quite slow
UNLESS, a catalyst is used
The most economical catalyst to use for this is what? Iron
Under these conditions, what percentage of ammonia is obtained? 15%
What happens to the remaining nitrogen and hydrogen? it is reused in the reaction
what happens to the ammonia at the end of the reaction? it leaves the reaction vessel, is cooled down, liquefied and is then tapped off.
3 uses of ammonia? the manufacture of fertilizers, nitric acid and nylon
Created by: eloiseis



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards