Question

I need help with calculating total percent recovery. I have to get the percent recovery for an extraction lab. My two compounds are 1) benzoic acid in methylene chloride and 2) p-dimethoxybenzene in ether.

These were my results

Benzoic acid recovered: 1.78 g

p-dime recovered: 0.56 g

The lab started off with 1 gram of a benzoic and p-dime mixture and when I used this to calculate the total percent recovery I got 234% which seems way too high. Can someone tell me what I'm doing wrong?

Thanks