May 21
What about the question where it said some molecules were able to jump out of the liquid due to higher KE, what happens to KE (or maybe temperature) of the liquid?
Sorry the wording is kinda bad lol
average KE decreases since molecules with the highest KE are vaporizing/leaving the liquid. still wondering about the mixing solutions without color change = equilibrium T/F question
What do you guys think the curve will be? Am I the only one who thought this was pretty tricky?
Hopefully there will be more of a generous curve.
I think I put true for the first part of that one.
What do you guys get for that question?
AB -----> A + B
It is ask for calculate of energy in the product side.
Cant remeber well, but I think it’s a 4-digit number with either + or - in front.
AB -> A + B
@dopefresh is it the one where we were given a delta h value? 800 ish?
@Bse15578 That’s what I thought – Not necessarily hard, just very easy to make mistakes.
Many people don’t seem to know how catalysts work. An example of a catalyst is chlorine catalyzing oxygen to form ozone. The standard ozone reaction is:
O2 + O --> O3
Catalyzed, it is:
Cl- + O2 --> O + ClO-
ClO- + O2 --> Cl- + O3 (Note that Cl- is not consumed in the overall reaction)
This is how homogenous catalysts function. A heterogeneous catalyst does not react; rather, it allows the reaction to proceed via an alternate pathway with a lower activation energy. This is something that most students do not know.
Regarding the curve, it will probably be much better than three wrong for an 800. According to the percentiles, an 800 in Chemistry is only the 91st percentile. There is no way that nearly 10% of test-takers have raw scores that equate to a 95%. The curve table that is given in the released test cannot be applied to other tests. Not only is the released test appreciably easier, but it was also administered several years ago (If I am correct, way back in 2006). A similar point should be made about the ACT Science Test curves…
@thesupremebanana Unless you’ve got transition ions reacting, you’re not going to see a color change.
wait
was the question
Catalysts are consumed in a reaction / catalysts change reaction mechanism
or
Catalysts are consumed in a reaction / catalysts do not change reaction mechanism
because i know for a fact that catalysts are NOT consumed and catalysts DO change mechanism.
I’m pretty sure catalysts DO NOT change mechanism
yeah, becausei thikn i remember putting false for thato ne…
What was the answer to the delta H multiple choice question? -850…?
The catalyst was TF
The delta h was -1696 I think, you had to know it was exoteric so it’s negative and then multiply by two
@glasshours yee
@baller55 - Why did you have to multiply by two?
You first had to balance the equation, it said an amount of moles (I forgot) and so you had to multiply the coefficients by two. Answer was A
@BasedBioGod I love how now, not only can we not agree on an answer, but we also can’t agree on the question XD