Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
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

Equilibrium

GCSE chemistry and combined chemistry

QuestionAnswer
What is a reversible reaction? A reaction which can go from reactants to products but also from products to reactants
What chemical symbol represents a reversible reaction?
If a reaction is exothermic in the forward direction what will it be in the reverse direction? Endothermic
Two reactants require 30kJ to turn into products. What energy transfer is involved when the products turn into reactants? 30kJ is released
What is equilibrium? The point in a reversible reaction when the forward and reverse reactions are occurring at the same rate
How is the amount of reactant changing at equilibrium? It is not changing
How is the amount of product changing at equilibrium? It is not changing
A reaction is exothermic in the forward direction. What will occur if the temperature is increased? The backward reaction will increase as it is endothermic and will reduce the temperature
A reaction is endothermic in the forward direction. What will occur if the temperature is increased? The forward reaction will increase as it is endothermic and will reduce the temperature
A reaction is at equilibrium when some product is removed. What will occur? The forward reaction will increase as that will increase the amount of product
A reaction is at equilibrium when the concentration of a reactant is increased. What will occur? It will move in the forward reaction to reduce the amount of the reactant.
The reaction below is at equilibrium. What will occur when the pressure is increased?2H₂(g) + O₂(g) ⇌ 2H₂O(g) The forward reaction will increase as there are fewer molecules on the right. This will reduce the total number of molecules and therefore the pressure.
What is the Haber process reaction 3H2(g) + N2 (g) ⇌ 2NH3(g)
What temperature is used for the Haber process? 450 oC
Where does the nitrogen for the Haber Process come from? Nitrogen from the atmosphere
Where does the hydrogen for the Haber Process come from? Hydrogen from natural gas
Why are the products of the reaction cooled? To turn the ammonia into a liquid and remove it, so driving the equilibrium in the forward reaction some more.
What is a dynamic equilibrium? A reversible reaction where the forward reaction and the backward reaction happen at the same rate
What catalyst is used for the Haber process? Iron catalyst
What pressure is used for the Haber process? 200 atmospheres
Created by: JBearfield
 

 



Voices

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:
Retries:
restart all cards