I don't understand why pressure changes the position of equilibrium in a reaction?
When thinking of pressure I like to think of two boxes joined together with the reactants in one and products in the other. When you make the boxes smaller (increase the pressure) the items in the box with more will start to be pushed into the box with less to reduce the amount of space in the one box. This is similar to a reaction!
N2(g) + 3H2(g) <-> 2NH3(g)(would be best written on the whiteboard for super/subscripts)
As we increase the pressure we will see the reactants 'move to the box of products' because there are more molecules on the side of reactants. They move to make more space by becoming products!
Now think of 2NO2(g) <-> N2O4 (g) what do you think would happen if we DECREASE the pressure?
HW
Related Chemistry GCSE answers
All answers ▸Explain, in terms of its structure, why graphite is able to be used as a lubricant
How can I test to see if a sample a metal contains potassium?
Describe and explain the trend in reactivity down the alkali metals group.
Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed. (5 marks)