AQA GCSE Chapter 08 (part 2) Equilibrium
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| The forward reaction producing ammonia is exothermic. Explain what would happen to the YIELD of ammonia at equilibrium if the temperature was increased. | use model answer « system will counteract change by » decreasing the temperature; « we know that » forward is exo « so equilibrium moves to » left-hand side/endothermic direction (1) and yield will decrease
🗑
|
||||
| Hydrogen reacts with nitrogen to produce ammonia. 3H2(g) + N2(g) <=> 2NH3(g) Give the meaning of <=> in the equation | reversible reaction/reaction goes both ways
🗑
|
||||
| N2(g) + 3H2(g) <=> 2NH3(g). The pressure used in industry is 250 atmospheres. Explain how the use of a higher pressure would affect the equilibrium YIELD of ammonia. | use model answer « system will counteract change by » decreasing the pressure; « we know that » there are less moles on right « so equilibrium moves to » right and yield will increase
🗑
|
||||
| The reaction between nitrogen and hydrogen to form ammonia is exothermic. The temperature used in industry is 450°C. Explain how the use of a lower temperature would affect the equilibrium YIELD of ammonia. | use model answer « system will counteract change by » increasing the temperature; « we know that » forward is exo « so equilibrium moves to » right-hand side/exothermic direction (1) and yield will increase
🗑
|
||||
| N2(g) + 3H2(g) <=> 2NH3(g) Explain the effect on the RATE of attainment of equilibrium, when the process is carried out at a pressure higher than 200 atm | increased pressure=more frequent collisions=higher rate (remember to answer the question: do not only say « faster reaction »)
🗑
|
||||
| N2(g) + 3H2(g) <=> 2NH3(g). The pressure used in industry is 250 atmospheres. Explain how the use of a LOWER pressure would affect the equilibrium YIELD of ammonia. | use model answer « system will counteract change by » increasing the pressure; « we know that » there are less moles on right « so equilibrium moves to » left and yield will decrease
🗑
|
||||
| The forward reaction producing ammonia is exothermic. Explain what would happen to the YIELD of ammonia at equilibrium if the temperature was increased. | use model answer « system will counteract change by » increasing the temperature; « we know that » forward is exo « so equilibrium moves to » right-hand side/exothermic direction (1) and yield will increase
🗑
|
||||
| Hydrogen reacts with nitrogen to produce ammonia. 3H2(g) + N2(g) <=> 2NH3(g). Explain what would happen to the YIELD of ammonia at equilibrium if the Ammonia NH3 was removed. | use model answer « system will counteract change by » increasing the CONCENTRATION of NH3; « we know that » Ammonia is on the right hand side « so equilibrium moves to » right-hand side(1) and yield will increase (ensure you use the keyword CONCENTRATION)
🗑
|
||||
| What is the model answer for a question on equilibrium? | 1) identify the change 2) "system tries to counteract the change by " doing the opposite 3) "we know that" EITHER where the chemical is OR more molecules=more pressure OR forward reaction is endo/exothermic 4)"so the equilibrium shifts" left/right
🗑
|
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:
ursulinechem2
Popular Chemistry sets