ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: SDPHD on May 14, 2011, 05:40:11 pm

Title: % Yield Question
Post by: SDPHD on May 14, 2011, 05:40:11 pm

How would you do this question?

(http://i.imgur.com/VchH1.png)

The worked solutions make no sense.

Thanks

Title: Re: % Yield Question
Post by: Greatness on May 14, 2011, 05:44:43 pm

I believe the answer for that in the book is wrong.
But you have to find the n(ethanol)=5/46
therefore m(ethanoic acid)=5/46 * 60 = 6.52
4.8/6.52 *100 = 73.6%

Title: Re: % Yield Question
Post by: SDPHD on May 14, 2011, 05:49:07 pm

Oh thats what I got too!

Stupid answers/worked solutions.

Thanks.

Title: Re: % Yield Question
Post by: Graphite on May 14, 2011, 05:50:21 pm

Btw % yield is for Unit 4 as indicated by my teacher, not sure why even recent exams examine that.