chem p5 urgent doubt

[anushey]

can anyone of you plz solve question 2 of june 2009 P5 chemistry.
At first they have asked use to find solubility.
the formula given is: mass of solid/mass of water in saturated solution * 100
but somehow I cant get the solubility right.
Also I don't know how to find transistion temp.Actually my whole graph is wrong I think.
Can someone plz scan and show me the correct graph and how to find the transistion temp.

 

[Areeb Afzaal]

I got my answer incorrect too in the first attempt. This question was first of its type by that time but now its common!!
Try it for yourself again,u will get the answer. The points are a lot messy and bear in your mind that lines will only intersect when extrapolated

 

[iKhaled]

I got my answer incorrect too in the first attempt. This question was first of its type by that time but now its common!!
Try it for yourself again,u will get the answer. The points are a lot messy and bear in your mind that lines will only intersect when extrapolated

hey..if u r having troubles with the graph too check this thread out i posted a graph there of this question
https://www.xtremepapers.com/community/threads/chem-p5-urgent-doubt.25192/

 

[Areeb Afzaal]

hey..if u r having troubles with the graph too check this thread out i posted a graph there of this question
https://www.xtremepapers.com/community/threads/chem-p5-urgent-doubt.25192/

Cant 1 line be a curve,coz its passing perfectly through all the points?

 

[Areeb Afzaal]

Cant 1 line be a curve,coz its passing perfectly through all the points?

and my transition temperature happens to be 67 C

 

[iKhaled]

and my transition temperature happens to be 67 C

thats the correct transition temp. btw check may june 2010 question 1 paper 52..its a very hard experiment i am not getting it :s if u know how to do it i will be glad if u can help me

 

[Areeb Afzaal]

thats the correct transition temp. btw check may june 2010 question 1 paper 52..its a very hard experiment i am not getting it :s if u know how to do it i will be glad if u can help me

I have not done it yet,but will see it InshaALLAH!!
Remember me in ur prayers.

 

[iKhaled]

I have not done it yet,but will see it InshaALLAH!!
Remember me in ur prayers.

pls when you do it don't forget to share ur answers with me cuz i couldn't do it..its so hard!

 

[Areeb Afzaal]

pls when you do it don't forget to share ur answers with me cuz i couldn't do it..its so hard!

U may ask,

 

[Ferr]

Can't we make line 1 as a curve?

 

[Areeb Afzaal]

Can't we make line 1 as a curve?

I think it can be,
and by the way u should be doing chem p2 by now!!

 

[seneria]

can anyone tell me how to attempt the questions asking us to determine the value of x in the formulae? for eg in june 2008 Q.2 part 2f. and what is the gradient? reply please ....

 

[Silent Hunter]

check may june 2010 question 1 paper 52..its a very hard experiment i am not getting it :s if u know how to do it i will be glad if u can help me

yeah its hard am stuck here too

iKhaled can you do the 1 (d) part of the same paper ?

 

[iKhaled]

yeah its hard am stuck here too

iKhaled can you do the 1 (d) part of the same paper ?

yeah this is the question that i couldn't do and i need someone to explain the whole of it cuz i didn't get it still :S i am sorry i wont be able to help u in it

 

[Silent Hunter]

hmm okay..... lets wait for somebody else to solve it...... i

 

[Gémeaux]

I have a question regarding the same question mentioned above (9701/52/M/J/10, question 1(d)), any one who could solve it, please answer this too : Molality and the concentration of the same solution would be different, right? And if I suppose the mass of KCl to be 2g in 20g of water, the molality would be (2/74.6) / (20/1000) ?
This is confusing.

 

[xxfarhaxx]

hw do u do Q1 e(iv)?? mark scheme isnt vry grt!!
http://papers.xtremepapers.com/CIE/... AS Level/Chemistry (9701)/9701_w12_qp_52.pdf

 

[autumnsakura]

I have a question regarding the same question mentioned above (9701/52/M/J/10, question 1(d)), any one who could solve it, please answer this too : Molality and the concentration of the same solution would be different, right? And if I suppose the mass of KCl to be 2g in 20g of water, the molality would be (2/74.6) / (20/1000) ?
This is confusing.

yeah, I need help on May June 2010 paper 52 as well for question 1(d). When they say 100g of water means 100g for each of my 5 sets of solvent or 100g and I need to divide it wisely to use for 5 solvents? And is 100g equal to 100cm3?