I think 20 is A, and 21 is C, but I have absolutely no idea how to do 22. Consid
ID: 865114 • Letter: I
Question
I think 20 is A, and 21 is C, but I have absolutely no idea how to do 22.
Consider the gas reaction The graph below represents the changes in concentration of reactants and products between the start of reaction and Time 1. Which event is roost likely to have occurred at Time 1? Which gives the rate of changes in concentrations that occur as the reaction proceeds from Time 1 to Time 2? When the lines for X, Y and Z are extended to time 2, which feature of those extensions is most closely related to the coefficients of the reactants, X and Y, in the equation for the reaction?Explanation / Answer
20. Addition of [X]
21. Decreases, Decreases, Increases
22. It should be either -d[X]/dt or -d[Y]/dt or +d[Z]/dt.
But it is not present.
Hence, [X] + [Y] would be the correct answer.