[Celebi22]

Hello, I'm very unsure how to do this type of calculation, so could you show me your method in your answer?

Say the loading of a reducing agent was 5mmol/g, how much of this reducing agent would be needed to produce 700mg of compound 1 (RMM of 250g/mol) to compound 2 (RMM of 260g/mol) and the percentage yield going from 1 to 2 is 90%

Thankyou

[Dan]

The phrasing of the question is confusing. Is this translated?

to produce 700mg of compound 1 (RMM of 250g/mol) to compound 2 (RMM of 260g/mol)

This doesn't make sense, does it mean:

to reduce 700 mg of compound 1 to compound  2
or
to produce 700 mg of compound 2 from compound 1
or something else?

I suspect it is the second option, i.e. the reaction is 1 2, the yield is 90% and you need 700 mg of the product 2 - is that correct?

If so:

Hint: How many mmol of 2 are produced? Based on a 90% yield, how many mmol of 1 do you need to produce that?

[Celebi22]

Hi, thanks for replying. No it's not translated, it's just phrased quite confusingly on my sheet.
700mg of compound 1 is being reduced and compound 2 is produced as a result in 90% yield, if that makes sense?

[AWK]

Hi, thanks for replying. No it's not translated, it's just phrased quite confusingly on my sheet.
700mg of compound 1 is being reduced and compound 2 is produced as a result in 90% yield, if that makes sense?

This make sense if you know formulas of compounds 1 and 2. In that case this concerns calculations for reaction with known yield eg. acetone (CH3COCH3) is reduced to isopropyl alcohol CH3CHOHCH3) with 90 % yield - you can calculate the mass of isopropyl alcohol obtained in this reaction.

[Celebi22]

Thanks, yes I have the formulas. I hope this doesn't sound silly, but how would I calculate the mass using your example?

[AWK]

http://www2.ucdsb.on.ca/tiss/stretton/CHEM1/stoich7.html