Difference between revisions of "Chem341:Recrystallization experiment"
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| − | + | lase record data (%recovery, MP)below for the recrystallization experiment. If students report that they had a lot of oil, and they had to decant their solution into another flask (this happened a lot with the Tuesday section), don't include those data here. Instead, just record the data on a piece of paper so we can look at them separately. | |
First you will need to create an account, as described '''[[Help:Creating_an_account|here]]'''. To edit ''this'' page, click on the "edit" tab, make the necessary changes, then click "Save page". If you want to check that your edits are right before you save, then click "Preview" instead (I usually do this). | First you will need to create an account, as described '''[[Help:Creating_an_account|here]]'''. To edit ''this'' page, click on the "edit" tab, make the necessary changes, then click "Save page". If you want to check that your edits are right before you save, then click "Preview" instead (I usually do this). | ||
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|- | |- | ||
|97.451 | |97.451 | ||
| − | |||
|112-115.5 | |112-115.5 | ||
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|- | |- | ||
| − | | | + | |99.5 |
| − | | | + | |158-161 |
|- | |- | ||
| − | | | + | |83 |
| − | | | + | |114-115 |
|- | |- | ||
| − | | | + | |68.24 |
| − | | | + | |109-111 |
|- | |- | ||
| − | | | + | |82.9 |
| − | | | + | |150-155 |
|- | |- | ||
| | | | ||
Revision as of 13:04, 21 September 2009
lase record data (%recovery, MP)below for the recrystallization experiment. If students report that they had a lot of oil, and they had to decant their solution into another flask (this happened a lot with the Tuesday section), don't include those data here. Instead, just record the data on a piece of paper so we can look at them separately.
First you will need to create an account, as described here. To edit this page, click on the "edit" tab, make the necessary changes, then click "Save page". If you want to check that your edits are right before you save, then click "Preview" instead (I usually do this).
When adding data to the table, the |- symbol indicates a new line of data, then the data are entered after the | symbols (first %recovery, then MP). On the first line I have put in some example data - 77%, and a MP of 113-114 °C for acetanilide (other compounds have a different MP).
Acetanilide
Table 1: Acetanilide results % Recovery MP 77 113-114 97.451 112-115.5 99.5 158-161 83 114-115 68.24 109-111 82.9 150-155
Salicylic acid
Table 2: Salicylic acid results % Recovery MP 77 157-159
m-Anisic acid
Table 3: m-Anisic acid results % Recovery MP 77 101-103
