Chemistry Urgent Help please!!

[nehaoscar]

http://maxpapers.com/syllabus-mater...hment/9701_may-june-2011-all-question-papers/

Variant 22 - Question 1 - c - i
In part b iv
The moles of NaOH that reacted with acid are found to be 0.04 moles
So in part c i
Shouldn't the moles at equilibrium be 0.06 moles for the acid and ROH and 0.04 mol for ester and H2O (Since 0.04 reacts and originally 0.1 is present so left over = 0.1-0.04 = 0.06)
The mark scheme says other way round... how?

 

[Nowrin Yasmin]

http://maxpapers.com/syllabus-mater...hment/9701_may-june-2011-all-question-papers/

Variant 22 - Question 1 - c - i
In part b iv
The moles of NaOH that reacted with acid are found to be 0.04 moles
So in part c i
Shouldn't the moles at equilibrium be 0.06 moles for the acid and ROH and 0.04 mol for ester and H2O (Since 0.04 reacts and originally 0.1 is present so left over = 0.1-0.04 = 0.06)
The mark scheme says other way round... how?

Yes, that's what I've even got. But the mark scheme says other way round. Confused as well

 

[nehaoscar]

Yes, that's what I've even got. But the mark scheme says other way round. Confused as well

Ok i just realised
If you read the Q carefully, the NaOH is reacting with the acid that is left over in the equilibrium mixture after 7 days
Thats why the moles are the same

 

[Nowrin Yasmin]

Ok i just realised
If you read the Q carefully, the NaOH is reacting with the acid that is left over in the equilibrium mixture after 7 days
Thats why the moles are the same

Oh Right! thanks! Jazak Ilahu Khairan
all the best for tomorrow

 

[aali81060]

Guys lets discuss May/june 15 chemistry varient 22

 

[ranahammoud98]

Guys lets discuss May/june 15 chemistry varient 22

ya how was it for u ??

 

[nehaoscar]

Yeah how was it? It was good for me! But P1 maths was HORRIBLE