GCSE chemistry and combined chemistry
Help!
|
|
||||
|---|---|---|---|---|---|
| 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
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Normal Size Small Size show me how
Created by:
JBearfield
Popular Chemistry sets