Sean1218
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More specifically, on acetylsalicylic acid (both crude/made in class, and commercial/store-bought), and salicylic acid. Please hang with me, I'll get to my question in a second.
I did these tests:
Crude aspirin w/ iron (III): Translucent, light peach in colour
Crude aspirin w/ iodine: Cloudy, orange in colour
Commercial aspirin w/ iron (III): Cloudy, violet in colour; no change after adding a few drops of NaOH
Commercial aspirin w/ iodine: Opaque, dark, olive green in colour [this one should be dark purpley, so something went wrong]
Salicylic acid w/ iron (III): Opaque, dark purple in colour
Basically, I have to determine why I got the results I did (i.e. colour changes). Mainly why the commercial aspirin w/ iodine turned olive green, but crude aspirin was orange (since they contain starch it should be dark purpley, so what could have happened?), and why the salicylic acid w/ iron (III) turned dark purple.
Explanations for the crude/commercial aspirin with iron, and why adding NaOH didn't have any effect with the commercial would also be helpful if you know, but I mainly just need the other ones.
I did a bit of research for other tests that I ran (not listed) and managed to answer those, but these are the ones that I haven't been able to find much on.
So, any help would be great!
I did these tests:
Crude aspirin w/ iron (III): Translucent, light peach in colour
Crude aspirin w/ iodine: Cloudy, orange in colour
Commercial aspirin w/ iron (III): Cloudy, violet in colour; no change after adding a few drops of NaOH
Commercial aspirin w/ iodine: Opaque, dark, olive green in colour [this one should be dark purpley, so something went wrong]
Salicylic acid w/ iron (III): Opaque, dark purple in colour
Basically, I have to determine why I got the results I did (i.e. colour changes). Mainly why the commercial aspirin w/ iodine turned olive green, but crude aspirin was orange (since they contain starch it should be dark purpley, so what could have happened?), and why the salicylic acid w/ iron (III) turned dark purple.
Explanations for the crude/commercial aspirin with iron, and why adding NaOH didn't have any effect with the commercial would also be helpful if you know, but I mainly just need the other ones.
I did a bit of research for other tests that I ran (not listed) and managed to answer those, but these are the ones that I haven't been able to find much on.
So, any help would be great!