Do they have to accurately account for changes in concentration of one thing? Or is it just the general shape and whether you decrease/increase certain species that they look for?
It doesn't have to be accurate; just a general shape
I had a multiple choice question for trials where they showed an equilibrium reaction and below they had three equilibrium curves; two for reactants and one for the product.
There were 4 letters A, B, C and D where we would have to look at the graph and interpret what happened at each of these points, such as whether temperature was increased/decreased (It was for Haber process so you needed to know whether it was exothermic or endothermic), concentration of a certain species was decreased/increased, etc.