Preparation of Aspirin SAC

[meli001]

Hey guys,

I have a SAC next Wednesday on the preparation of aspirin (pg.102 of the Heinemann Chem 2 Student book) and I'm meant to determine the % yield of aspirin.

So my question is: for my theoretical value which mass do I use for salicylic acid? The mass that was weighed in my actual experiment or just the 3g as indicated by the materials section?

Thanks guys

[jasoN-]

the mass you weighed would be my assumption; no point using 3g to find theoretical mass if you only have 2.9g

but still it shouldnt be too hard to get 3.00xxg hopefully

(edit for better wording)

[schnappy]

Ask your teacher, they're marking it. If they won't tell you, I'd go with what your scales say.

[meli001]

Thanks guys. Our chem class argued with her for a bit and she finally admitted she was wrong. YAY