CHEMISTRY JUNE 2014- ANSWER GUESS

[Talha Naeem]

please tell the ans. of the last question last part of chem june 2014 unit 3 held taday!!!!!!! of 64% yield

4.8g is the correct answer.. I confirmed it with my teacher.
I got 1.92g

 

[St0cK]

Me too!

Me three ! haha

 

[hitarth patel]

4.8g is the correct answer.. I confirmed it with my teacher.
I got 1.92g

even i got 1.92...........then realized that what i did was totally BS......so i had to redo the whole question in a small space

 

[Believer]

Wohoo!

 

[colors]

but we were suppose to find the actual yield....how is it possible for actual yield to be greater than the theoretical?????theoretical was 3.08

 

[Believer]

but we were suppose to find the actual yield....how is it possible for actual yield to be greater than the theoretical?????theoretical was 3.08

Colors, leave it! we still don't know just wait for result haha!

 

[colors]

so still no one's sure for the answer?

 

[Believer]

I don't know, the guy above said he's consulted with the teachers it's 4.82g, but still let see!

 

[crazzysashgirl]

nw thz sux,, i got both 1.9 n 4.8 n i cnt rmmbr wt i wrot n d ppr.. damn it.. >_<

 

[Ysph06]

I got 1.97! How did you guys get 4.8?

You are asked to find the mass of butan-2-ol required to produce 3 g of butanone i think. ( i dont really remember the question)
(3/72.1) * 74.1 = 3.08g

(x/3.08) * 100 = 64
x= 1.97g <-- If you take 3.08 as 100 % yield

(3.08/x) * 100 = 64
x=4.82g <-- If you take 3.08 as 64 % yield

that's how people got different answers