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isudailyjournal.doc
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Friday, April 30th, 1999
- Alana was absent
- Drew went to the library and researched MSDS safety cards
on potassium permanganate and various other chemicals
- Ivan wrote both materials sections and prepared the binder
- Drew returned to class and completed the Flow Chart for Composition
of a Compound
- Ivan began work on the Flow Chart for Iron Determination
- Ivan began work on the Daily Journal
Friday, May 7th, 1999
- Alana printed out the ISU
procedures off of the internet
- Alana and Ivan worked on our Hypothesis
- Ivan finished the Flow Chart for Iron Determination
- Drew completed the Flow Chart for Composition of a Compound
- Alana began research for our Applications
- Drew began work on the MSDS tables
Wednesday, May 12th, 1999
- Alana completed the rough draft
of the Hypothesis
- Alana researched applications in the library
- Drew set up the basis for the MSDS tables
- Ivan completed the rough draft of the Concept Map
- Ivan typed up the Materials and Chemical Reagents in good copy
Thursday, May 27th, 1999
- Alana completed 1st draft of the
Applications
- Drew completed MSDS tables in rough
- Drew completed typed copy of the Flow Chart for Composition
of a Compound
- Ivan completed the first and second drafts of the introduction
- Drew and Ivan worked on the first copy of the bibliography
Friday, May 28th, 1999
- Alana began work on the second
draft of the Applications
- Drew began writing the MSDS tables in good
- Ivan and Alana converted between moles, atomic weight, and
formula weight in the materials
Monday, May 31st, 1999
- Alana and Drew gathered our Bunsen
burner, protective eyewear, Erlenmeyer flask, an electronic balance,
a spatula, a test tube, and a beaker
- Alana set up the pole and clamp and Drew tested out the electronic
balance
- Ivan and Drew found Potassium Chlorate, Potassium Permanganate,
and Sulfuric Acid in the chemical storage area and studied their
WHMS labels
- Alana and Ivan discussed the addition of 'catching the oxygen'
to our Composition of a Compound experiment
- Alana and Ivan purchased Ferrous Sulfate Supplement tablets
at the pharmacy
Tuesday, June 1, 1999
- Alana and Drew gathered a water
basin, tubing to direct the oxygen, and set up the apparatus
for the Composition of a Compound lab
- we watched in awe as Dr. Pereyra miraculously bent a glass
rod to serve our experiment's needs
- Alana and Ivan calculate the moles of Potassium Chlorate, the
moles and weight of Sulfuric Acid needed for Iron Determination,
and the moles and weight of the required amount of Potassium
Permanganate
- we began our experiment, Composition of a Compound, at about
2:30 pm; we weighed out 2 grams of Potassium Chlorate, placed
it into the clamp of the heating pole, and took a picture of
the apparatus
- Dr. Pereyra runs us through a test run of the experiment; somehow,
it works on the first try
- the air in the tube and flask measured to be 53 mL, and oxygen
from the Potassium Chlorate began sublimating as soon as the
Potassium Chlorate melted
- however, we were unable to include this test as one of our
results because we were caught unprepared for the switching of
oxygen-catching test tubes/graduated cylinders
- on our second attempt, we nearly burnt the bottom of the flask
because Ivan had set the gas level too high and the Bunsen burner
was raised too close to the flask
- on trial 3, all went well until the Potassium Chlorate melted;
we noticed that no oxygen was displacing the water in the test
tubes, and suddenly, the rubber stopper slid off of the flask
and nearly into the Bunsen burner
- on trial 4, we plugged the stopper as tightly as possible and
melted the Potassium Chlorate at a very gradual rate; once again,
the air in the flask and tube displaced 54 mL of water…
but for reasons that still remain unclear, no oxygen displaced
the water in the test tube; we checked the stopper after, and
it was still tightly plugged into the flask, and we observed
a slightly-foggy film gently coat the interior of the glass tube,
but no water was displaced; Ivan even checked the water basin,
and there was no visible discrepancies from the previous trials
- Ivan calculates that the amount of oxygen in the Potassium
Chlorate will be approximately 0.78 g, which is equal to 0.006
mol of Oxygen, and equal to 134 m of volume
- Group 6 left the science room determined to get at least one
successful trial done by the end of the next day…
Wednesday, June 2nd, 1999
- our group began trial number 5
of Composition of a Compound; Ivan's getting worried that the
group will never get to the second experiment
- we plugged the flask and tightly as we could, and could find
no leaks in the apparatus for oxygen to leak out
- once again, the air in the flask and tube amounted to 50 to
51 mL (previously, it had been 53 and 54 mL); at first, after
the Potassium Chlorate began to boil and bubble, no oxygen displaced
any of the water; however, as soon as Dr. Pereyra gave a look
at the flask, oxygen began to displace water at an incredible
rate
- however, even after the Potassium Chlorate stopped bubbling,
oxygen continued to displace the water in the test tubes and
never did stop
- we ended the experiment after 679 mL of water had been displaced
(even though oxygen was still flowing in) and weighed the Potassium
Chlorate; Alana weighed the Potassium Chloride 39.6 g…
- we cooked the flask again for 3 minutes and 30 seconds and
weighed the flask on the scale again, and even though we could
not see bubbling in the Potassium Chlorate, the combined mass
of the Potassium Chlorate and the flask measured 39.5 g!
- therefore, Group 6 has a few problems to work out; in this
test, we believe that the unlimited amount of oxygen was a result
of Dihydrogen Oxide evaporating on contact with the flask
- after letting the flask cool down, water began to be sucked
into the flask like a vacuum; this is most likely because the
absence of air in the flask leaves a lot of volume for water
to occupy, so the water diffused into an area of low concentration
of matter
- the weight difference at the end may have been a result of
less water existing inside the flask, since our group is unsure
whether any water dripped into the flask while we were letting
it cool down
- in our third trial the other day, the stopper in the flask
popped out perhaps because oxygen could not escape through the
pipe easily, thus creating pressure due to an increase in kinetic
energy at constant amount of volume; also, I think our group
just didn't screw the stopper in tightly enough because we have
not experienced the same phenomenon since
- our group is still debated what occurred in trial 4 yesterday;
there was not any holes, leaks, or blocked areas for the oxygen
to escape or be contained since all 54 mL of air in the flask
had successfully reached the water basin as predicted; next time,
we'll let Dr. Pereyra give his stare to the flask again to get
it started!
Thursday, June 3rd, 1999
- group 6 finally accomplished a
decent trial of the experiment! Once again, the mass of the Potassium
Chlorate was about the amount predicted: Ivan predicted that
the mass would be 39.62 g, and the mass ended up to be 35 g…
however, there is that difference… is it possible that some
of the Potassium Chlorate evaporated?… no, because both
trials ended up at 39.5 g, so it wasn't as if any water took
up any mass… but according to these results, Oxygen takes
up 45% of the KClO3, but theoretically, it should only take up
39%!
- the volume catching part messed up again, though not as badly
as before; our group decided to eliminate most of the vacuum
problem by loosening the rubber stopper when the decomposition
was complete; it seems as if we put the stopper in too deep since
it started to melt! WAH! I had an emotional attachment to that
silly thingy!
- anyways, we caught 339 mL of oxygen in total with 49 mL of
that being the air from the flask; in the succeeding decompositions
to make sure all of the Potassium Chlorate had decomposed, we
did not count any of the oxygen that entered the test tubes as
valid oxygen from the Potassium Chlorate
- but the problem is, Ivan predicted that 39% of the Potassium
Chlorate would be oxygen; that equals to 0.78 g which equals
to 0.016 mol of O3 which equals 358 mL, but we got only 290 mL!
Did some of the oxygen escape without us knowing? Was there a
leak in the apparatus? Was oxygen still coming trying to get
through the tube to the test tube while we shut down the apparatus?
- anyways, after 1 successful trial, 1 partially successful trial,
and 4 dead-in-the-water trials, I think group 6 is done with
Composition of a Compound, unless we have a lot of extra time
on our hands to tape the seventh trial
- Drew finished the good copy of our MSDS for Composition of
a Compound and he is using it to make a WHMS table for Potassium
Chlorate
Friday, June 4th, 1999
- Alana, Drew, and Ivan worked on
calculating the amount of Potassium Permanganate needed to end
up with a 0.005 M solution; I think that we used 0.16 g of Potassium
Permanganate with 200 mL of distilled water; the purple product
was probably the highlight of this day of mistakes and messy-ups
- Alana and Ivan prepared the Potassium Permanganate solution
first; we spilled a few millilitres of it on the table, but we
thoroughly washed it off
- however, the creation of the Sulfuric Acid solution didn't
go exactly as planned
- Ivan doesn't even remember why anymore since it makes no sense,
but he decided to make a 200 mL solution instead of 100 mL, thus
doubling the formula; however, I forgot to double the amount
of ferrous sulfate in the solution
- not only that, but we forgot to grind the tablets of the iron
before we let them dissolve in the Sulfuric Acid; the red tablets
simply got stuck in the graduated cylinder and it took quite
a while to get them out
- yes, we dropped a few millilitres of Sulfuric Acid, but Ivan
made sure that he washed that area out as thoroughly as possible
- while pouring the Potassium Permanganate into the beret (is
that how you spell it?), about 20 or so mL of the Potassium Permanganate
spilled onto the counter and a nearby chair; we cleaned it all
up, only to watch as while we were moving the beret back into
place, it slid out of it's place and about 20 or so mL gushed
onto the counter and the sink; I still feel lucky that the beret
didn't shatter!
- okay, we were finally ready to do our experiment; we began
the titration but Dr. Pereyra had to help out since we'd probably
mess up something else
- the first titration went smoothly, as did the second titration;
however, Ivan messed up the third titration since he allowed
a few extra drops of the quickly-dropping Potassium Permanganate
to titrate with the Iron solution
- a few errors that may have occurred are that the water was
not completely pure any longer (after so many days sitting out
in the air), the Sulfuric and Potassium solutions may not have
been perfectly the required Molars (I have a feeling we botched
the Sulfuric Acid one up), we should've titrated the solutions
at a much slower pace so that we could've have seen the exact
moment that the Potassium Permanganate colour stays, and it didn't
look like the entire contents of the Iron (II) Sulfate tablets
dissolved completely in the sulfuric solution
Saturday, June 12th, 1999
- well, it's almost the time to hand
in this project; doggone-it! I'm going to really mss doing this
work!
- Drew has handed me all of his work, although Alana seems to
have left for a tournament or something; I'm not sure if I'm
going to get work from her in time to put it on the CD
- we got together on Wednesday; Drew had all of the rough copies
of the observations done, while Alana was still doing the applications
- she told me that the photographs will come in on Sunday or
so, therefore her PowerPoint presentation won't be done in time
- I'm now putting every bit of info onto web-pages; there's no
fancy graphics, but at this moment of time, I don't really care
- My computer keeps freezing as soon as I put a little picture
on the screen! This is getting pretty annoying, but at least
my computer hasn't die again
- Oh no! I'm not even sure if we have our group binder finished
or not! I can't tell since we can't take it home!
Synopsis
- Ivan did all of the web-pages;
they wouldn't have taken long if his computer didn't keep freezing!
- the rough draft of the concept map was made by all 3 of us;
Ivan then put into good copy at home
- the introduction was made by Ivan based upon the group's ideas
in the concept map
- Drew did all of the MSDS safety sheets
- Alana did much of the introduction's hypothesis section; however,
she did not manage to create a good applications section because
of her extra-curricular activities
- Alana created the materials section, and Ivan modified the
materials after Dr. Pereyra made modifications to our experiments
- Drew did the flow chart of Composition of a Compound and the
rough copy of the flow chart for Iron Determination, and Ivan
did the flow chart for Iron Determination in good copy (and later
updated Drew's flow chart for Composition of a Compound)
- Alana did some rough work on the observations section, while
Drew did everything else in the results and observations sections,
including the rough work
- the discussion was made in rough by Ivan, was made into 2nd
draft by Alana, and made into good copy by Ivan
- we all did the experiments together: Alana was the one who
mostly did the Iron Determination experiment, including the creation
of the solutions, while Drew and Alana shared the job of Composition
of a Compound
- Alana and Drew got together to discuss results on one occasion,
and as a whole group, we got together on about 7 or 8 occasions
(we also had constant communication through E-mail)
- Ivan and Drew worked on the bibliography together
- Ivan and Alana are responsible for the group binder
- Alana is responsible for the photographs taken throughout the
experiment; she was also the one to come up with the idea of
video-taping the experiments, but we were unable to record the
experiment as television or mpeg footage because we were short
on time by the time we began on the experiments
- because pictures of the observations are not developed yet,
Ivan quickly drew up pictures of the apparatus and the experiment
- Alana will begin creating the Power-point presentation of the
results and observations sections as soon as she returns and
gets the photographs
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