Sample percentage yield

Hi I need help with answering a question on percentage yield and I can't find the answer anywhere.

In my sample the percentage yield is higher than the calculated weight percentage but I can't explain why this is. I've done two different experiments, one with tin and another with oxalate where the percentage yield of both is higher in my sample than the calculated weight percentage. (By calculated weight percentage, I mean the molar mass of tin/oxalate divided by the molar mass of the product x 100)

Does anyone know why sample percentage yields are higher than calculated weight percentages? I can't figure it out :/

Thanks!

(edited 8 years ago)

Original post by HelloGoodbye

Hi I need help with answering a question on percentage yield and I can't find the answer anywhere.

In my sample the percentage yield is higher than the calculated weight percentage but I can't explain why this is. I've done two different experiments, one with tin and another with oxalate where the percentage yield of both is higher in my sample than the calculated weight percentage. (By calculated weight percentage, I mean the molar mass of tin/oxalate divided by the molar mass of the product x 100)

Does anyone know why sample percentage yields are higher than calculated weight percentages? I can't figure it out :/

Thanks!

1. Incorrect calculation
2. Impurity

Reply 2

HelloGoodbye

OP

21

Original post by charco

1. Incorrect calculation
2. Impurity

So is the weight percentage in the sample not supposed to be higher than the calculated weight percentage? My calculations are correct since my results have been marked as correct, I just can't provide an explanation.

OP

bump

Original post by HelloGoodbye

So is the weight percentage in the sample not supposed to be higher than the calculated weight percentage? My calculations are correct since my results have been marked as correct, I just can't provide an explanation.