Mod 5 q (1 Viewer)
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Hmm, that graph is less than amazing at depicting it, its pretty hard to see.
If you look at just after the two minute mark, in the single grid length, all of a sudden, the equilibrium moves more quickly toward the same equilibrium position it was destined to to begin with. Remember that a catalyst doesn't shift an equilibrium, but it does increase rates of reaction (forward and reverse equally). This is what is happening just after 2 minutes.
Besides that, none of the other options make sense to describe the change.
If you look at just after the two minute mark, in the single grid length, all of a sudden, the equilibrium moves more quickly toward the same equilibrium position it was destined to to begin with. Remember that a catalyst doesn't shift an equilibrium, but it does increase rates of reaction (forward and reverse equally). This is what is happening just after 2 minutes.
Besides that, none of the other options make sense to describe the change.
wizzkids
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(A) is the correct answer. The significant feature of the three graphs is the sudden change of slope at t=2 min. The rates of change of all three species increased (by roughly x2 or x3) and the position of equilibrium is attained much more quickly. This is what a catalyst would do.
thx