Chemo P5 tips

[smzimran]

how does an increase in solubility of a solid with temperature favors the prediction that it is an exothermic reaction???

precipate ---> dissolved (soluble) (exothermic)

when temp. is increased, reaction shifts forwards according to Le Chatilier

 

[user]

They must be 'anamolous' points
Because at low temperatures, solubility results arent that accurate
ousamah112 ^ that is why

aoa wr wb!

i suppose it is a curve...

i remember there was a question they asked to draw a line of best fit...and teacher told me that doesnt always means a st line..it was supposed to be a curve! i think thats the case here too..

 

[smzimran]

aoa wr wb!

i suppose it is a curve...

i remember there was a question they asked to draw a line of best fit...and teacher told me that doesnt always means a st line..it was supposed to be a curve! i think thats the case here too..

Chemo P5 tips

 

[zaafer]

could anyone please give me a model answer for 9701/05/m/j/o8/ Q1 d)?

 

[user]

aoa wr wb!

i suppose it is a curve...

i remember there was a question they asked to draw a line of best fit...and teacher told me that doesnt always means a st line..it was supposed to be a curve! i think thats the case here too..

Chemo P5 tips

i know that but see this draw a line of best fit but that was rather a curve... the points clearly show, they'd fit a curve...

 

[leadingguy]

i know that but see this draw a line of best fit but that was rather a curve... the points clearly show, they'd fit a curve...

yes it should be curve or else it should be straight lines, that are tangentional to the expectd curve. both are acceptable as written in M.s

 

[user]

smzimran Aoa wr wb!
further confirmation, the er states: "Many candidates erroneously took the drawing of two lines to be straight lines; a difficult task given the distribution of the points if plotted correctly."

 

[user]

View attachment 10212 please someone explain... this is from m/j o9 ..hw do i draw graph with these points?? question says draw two separate lines..:S

aoa wr wb check my post above..

 

[smzimran]

i know that but see this draw a line of best fit but that was rather a curve... the points clearly show, they'd fit a curve...

You are right!
I will delete that post so others are not misguided!
ousamah112 and hassam:
I was wrong...

 

[sahania]

has anyone solved 2007 specimen paper ?

 

[Paradoxical]

aoa wr wb check my post above..

Then how exactly do you draw the lines? I'm a little confused. :s

 

[leadingguy]

http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_s11_qp_51.pdf

http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_s11_ms_51.pdf\

question 1 d ii)

how to show that ???

 

[user]

You are right!
ousamah112 and hassam:
I was wrong...
View attachment 10221

by what the er says..that means...although they did allow lines acceptionally, but what they expected was a curve..

 

[smzimran]

by what the er says..that means...although they did allow lines acceptionally, but what they expected was a curve..

Hmm, maybe giving the benefit of doubt to the candidates!

 

[leadingguy]

Hmm, maybe giving the benefit of doubt to the candidates!

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s11_qp_51.pdf

http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s11_ms_51.pdf\

question 1 d ii)

how to show that ???

than ku

 

[smzimran]

than ku

Leaving that paper for my 'Mock' for tomorow morning!

 

[user]

Then how exactly do you draw the lines? I'm a little confused. :s

just extrapolate thmm....i am not ableto do it on the computer...this is roughlywhati cud do...draw 2curves...extrapoltethem so that they intersect..

 

[Paradoxical]

just extrapolate thmm....i am not ableto do it on the computer...this is roughlywhati cud do...draw 2curves...extrapoltethem so that they intersect..

View attachment 10225

Ah, I see. Thanks!
I'm so going to fail the exam tomorrow. :/

 

[larina]

which one is acurve and which one is a line??

its obvious
the one which goes from 20-65 is the curved one
AND MAKE SURE U LABEL UR AXES!!!

 

[Utsav.]

oct nov 10-53
Q2 table plz explain what should be added nd why???