Friday, November 13, 2015

Formula of a Chloride Lab

Yesterday in class, we did the Formula of a Chloride Lab. To complete the lab, we put a small piece of Zinc in a beaker, then added Hydrochloric acid. Next, we put the beaker on a hot plate, and heated the chemicals. The Zinc dissolved into the Hydrochloric acid, then water began to be driven off. We heated the mixture until there was no liquid left, and there was a salt left in the beaker. Then, we cooled the beaker and took it's mass. The purpose of the lab was to determine the empirical formula formula for the salt at the end of the lab. In our results, we got a ratio of one Zinc to 2.068 Chlorine, which was a 3% error, as the real ratio is one Zinc to 2 chlorine atoms.
Image result for zinc
https://en.wikipedia.org/wiki/Zinc

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7 comments:

  1. AnonymousNovember 13, 2015 at 12:26 PM

    You got way closer to the actual answer than me and my partner did, we were off by 7.6%, which is kind of awful. I like your picture of zinc, it looks pretty cool. I clicked your link and it helped me out a ton, thanks!

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  2. UnknownNovember 15, 2015 at 3:26 PM

    I find it interesting that even a small difference from the actual result can make a fairly large percent of error. .068 is a small number and 3 percent seems like a lot. I am glad none of us created the deadly white smoke.

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  3. UnknownNovember 15, 2015 at 7:45 PM

    Wow that is a really small percent error, nice work Kyle! Our group got around 6% error and I thought that was halfway decent. You put us to shame...

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  4. UnknownNovember 16, 2015 at 4:27 PM

    Your group did very well! It took my group a few tries, but we eventually got very close to the actual answer. Your links were especially helpful. Thanks.

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  5. UnknownNovember 16, 2015 at 4:29 PM

    Your group did very well! It took my group a few tries, but we eventually got very close to the actual answer. Your links were especially helpful. Thanks.

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  6. AnonymousNovember 17, 2015 at 3:37 PM

    Me and Megan had to do a little calculating before we got our ideal error percentage. Because we started off with an almost 15% error which is terrible.That picture is especially interesting because doing the lab didn't exactly tell me what zinc looked like.

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  7. UnknownNovember 17, 2015 at 10:11 PM

    You did really good on your calculations. 3% error is extremely close to the actual number. However, it's weird to think that only being .068 off turned out to be 3% off.

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