<p>i dont remember other questions :[</p>
<p>For the best way to measure exactly ??? mL of a solution, was it volumetric flask or buret or something else (please be volumetric flask…)</p>
<p>nope
buret</p>
<p>hydroxide ion, but h2so4 is a strong acid too right?
so it would dissociate completely, forming twice as many h+ ions…
the breaking of the bonds would generate more heat?
oh idk whatever. >.></p>
<p>drink cyanide ,</p>
<p>Sorry but for h2so4 it was a point 1 molar 1/10 molar solution. For hcl it was a 1 molar or 1/1. So even if you dissociate both hydrogens of h2so4 ur still left w/ .2 or 1/5 concentration. Hcl still has a 1 molar concentration rougly 5 times the strength of h2so4</p>
<p>ohhhh crap. i misread the answers then. goddamnit :
my mind was like in a blur during the test.</p>
<p>Does anyone remember the question where a gas is evolved?</p>
<p>I asked this a while back, but someone told me there were two.</p>
<p>I only remember the one where an answer includes a Calcium compound. I picked that because a metal in solution should produce hydrogen gas.</p>
<p>Someone said there was one with H2CO3 though…
Were they talking about the CH3COO in sol + heat -> CO2 + H2O?</p>
<p>it was the one where CaCO3 was a reactant</p>
<p>My answers are matching with the ones you guys have listed…baller</p>
<p>Wait, for the KCl thing, won’t it be that KCl can’t dissolve at room temperature? Since you need to supply heat…</p>
<p>Was CaCO3 an answer choice? Or was it listed as a reactant in the question?</p>
<p>I remember picking a Ca compound for something to do with a gas.</p>
<p>The KCl thing will crystallize at some temperatures, and it is exothermic because the reverse is endo.</p>
<p>tetrisfan, well you wouldn’t know specifically that it wont dissolve at room temperature. and you cant know for sure that you need to supply heat. maybe enough heat is already present at room temperature.</p>
<p>i picked the one that would form H2 gas. but i was totally guessing…</p>
<p>pretty sure it was calcium carbonate plus acid becaus thats a way to produce o2 gas. This is for oen of the questions on the first part right.</p>
<p>OK guys, which were the TT CEs?</p>
<p>can someone compile a list of confirmed answers that we have come up with so far? :D</p>
<p>
</p>
<p>It would only do that in a highly concentrated base. H2SO4 is a strong acid, but HSO4- is a weak acid.</p>
<p>shahe, where did you get the information about the scoring systems for the various years?</p>
<p>CaCO3+ H20 = H2CO3 plus CaO
H2CO3 immediately disassociates into CO2 gas and water</p>
<p>nooo in response to the post by rocker
.1 M solution of H2SO4 produces .2 M fo H +
1 molar solution of HCl produces 1 M of H+
1 M > .2 M</p>