<p>@besthbk ok, so H2SO4 is polyprotic meaning it has more than one H+ when it dissociates. in order to set the H+ and the OH- equal to each other, you have to account for the fact that sulfuric acid is polyprotic which is why you have to multiply the number of moles of H2SO4 by 2. in other words, for every one mole of H2SO4 present, 2 moles of H+ will be produced. i think you have been overthinking this but this is a simple stoichiometrc calculation</p>
<p>For #60 you could do an ice table in your head so A ----> B + C
1.2 = (1-x) + x + x soooo .2 = x when you simplify it.
You then plug the values in (.2)(.2)/ (.8) and you get the answer 0.050</p>
<p>could you please sate the question for number 60</p>
<p>Holy crap, if anyone could PM the link ill be ever gratefull</p>
<p>@Robots156 none of us have the link to the collegeboard practice test since it was only given to our teachers. i even asked my teacher for it but he said that the teachers were forced to take an oath that they would not release the test to their students or anyone else. so unless someone procured the link by illegal means, we do not have the link</p>
<p>Same here. @panda98star what practice exam are you talking about?</p>
<p>What about PES do we need to know? Like can someone please explain to me how that works and what it entails?</p>
<p>@hawkace it’s the official one, but I don’t have the links or anything. We took it in class and I wrote down the problems I got wrong, so I’m just going off of my notes.</p>
<p>@mastermaestro THANK YOU SO MUCH! :D</p>
<p>Hey panda98star ask any questions… I was born in 98’ too lol… I’m assuming you were born in 1998.</p>
<p>hey how are you guys studying for the FRQ’s? Are there any good practice questions besides the ones collegeboard released on the practice test???</p>
<p><a href=“Barron's Online Test Preparation for AP Exams”>http://barronsbooks.com/ap/chem/</a></p>
<p>Can someone explain hydrolysis? The Barron’s explanation isn’t helping… Also do we need to know formal charge and bond order? </p>
<p>@stripedpanda You really can’t study for the FRQ’s that much. I doubt that CB will take old questions and re-use them. My suggestion is that you understand the concepts of everything in chemistry and leave it to luck. :-bd </p>
<p>@NewJersey25 What don’t you understand about hydrolysis? I think that we need to know about formal charge and bond order. </p>
<p>How helpful do you guys think that the official test teachers gave us will be? Like in terms of the mc, will they reuse some of those questions? Or will the frq will be similiar?</p>
<p>I think it’s going to be extremely similar. I’m hoping for same style, different numbers kind of thing but I doubt it. All in all, if you know how to do the practice test problems, you should be in good shape.</p>
<p>After 15 minutes, I deducted that HCN+2 cannot exist. Does anyone know the lewis dot diagram for HCN+2?</p>
<p>Is that why teachers weren’t allowed to distribute the official practice tests?</p>
<p>Do we need to know bond angles and VSEPR structures?</p>
<p>@hawkace I don’t understand how it ties in to acids and bases. So for example, HF is an acid, but through hydrolysis the solution becomes basic? </p>
<p>How do my calculated answers have to be? If my answer us one digit off for sig figs or rounded the wrong way will I still get the points for an FRQ?</p>