Chem Lab C
Posted: July 31st, 2013, 8:51 am
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Re: Chem Lab C
Posted: October 14th, 2013, 6:24 pm
Will the indicator for the titration always be the ubiquitious phenolphthalein or is it at the discretion of the supervisor?
Re: Chem Lab C
Posted: October 15th, 2013, 7:14 pm
It's at the discretion of the supervisor, but I think most times chances are it'll be phenolphthalein, because that'll be what supervisors are most familiar with. They might also give you a choice of indicators, I think I had that happen to me at least once.
Re: Chem Lab C
Posted: October 17th, 2013, 4:45 pm
Thanks. Is the "titration race" on for this year or is it just a test with practical stations?
Re: Chem Lab C
Posted: October 17th, 2013, 9:17 pm
Titration race?
Is this referring to last year's nationals?
Is this referring to last year's nationals?
Re: Chem Lab C
Posted: October 18th, 2013, 3:57 pm
I'm not sure.
I just didn't know what aspects of stoichiometry will be tested on or not. I know titrations will be asked in the practical section.
I just didn't know what aspects of stoichiometry will be tested on or not. I know titrations will be asked in the practical section.
Re: Chem Lab C
Posted: October 18th, 2013, 4:58 pm
What makes it a race though?
I heard last year's nationals test was absolutely ridiculously long; I think my teammates said they had to do like 4 or 5 titrations (or was it 8?) at a 6 minute lab station. All the other stations asked for an insane amount of problems done in a ridiculously short time limit.
Is that where you got the "race" part of it from?
EDIT: nvm, it's at the top of the thread
I heard last year's nationals test was absolutely ridiculously long; I think my teammates said they had to do like 4 or 5 titrations (or was it 8?) at a 6 minute lab station. All the other stations asked for an insane amount of problems done in a ridiculously short time limit.
Is that where you got the "race" part of it from?
EDIT: nvm, it's at the top of the thread
Re: Chem Lab C
Posted: October 20th, 2013, 9:14 am
8 titration procedures is not hard if you do calculations beforehand, but 8 titrations total (including prepping) is insane...
Re: Chem Lab C
Posted: October 29th, 2013, 4:51 pm
What sets apart teams in Chem Lab? I'd imagine about 80% of teams have students in or who have already taken AP Chemistry. Therefore, how do teams fall or rise as it's really simple to do stoich and understand equilibrium concepts. I feel as if many teams will do about the same. Is it the labs? If so, how are labs graded and what kind of labs are done other than titrations?
Re: Chem Lab C
Posted: October 29th, 2013, 7:05 pm
I've never done this event (I'm currently in AP Chem) but I think that the stoich calculations will probably use insane things such as complexes, free radicals, obscure, massive hydrocarbons, and such.