CHEMISTRY ATP QUESTION HELPPLEASE...

[alihaiderrrt]

In the last question of ATP paper,there is a question of temp...u need to plot points and then join the points with two intersecting straight lines...what does it mean...i read some examiner report and marking scheme but i am still not getting it..how should i draw the lines....if u can post a pic.please do....my paper is tomorrow :'( .

 

[aneeq247]

I dont have any pics, but you have to draw the line with slope, and the horizontal line, and they should intersect at some point

 

[ahmadumar]

In the last question of ATP paper,there is a question of temp...u need to plot points and then join the points with two intersecting straight lines...what does it mean...i read some examiner report and marking scheme but i am still not getting it..how should i draw the lines....if u can post a pic.please do....my paper is tomorrow :'( .

whenever it says using two straight intersecting lines
join all points that lie in a straight line by one straight line
and then join the rest points in a striaght line with a straight line
there would be 1 point that will be left out........leave it out

 

[ahmadumar]

i'm also having chem p4 today
gud luck man!
my centre 2day is the beaconhouse school in DHA

 

[alihaiderrrt]

whenever it says using two straight intersecting lines
join all points that lie in a straight line by one straight line
and then join the rest points in a striaght line with a straight line
there would be 1 point that will be left out........leave it out

So first join all points which lie straight to each other WITH ONE STRAIGHT LINE..
Then join the ones which were left out(from first line) with a straight line??

 

[ahmadumar]

join the rest with a second straight line

 

[ahmadumar]

extend both the straight lines such that line1 and line2 intersect with each other

 

[ahmadumar]

So first join all points which lie straight to each other WITH ONE STRAIGHT LINE..
Then join the ones which were left out(from first line) with a straight line??

got it?
or should i upload a pic?

 

[alihaiderrrt]

extend both the straight lines such that line1 and line2 intersect with each other

thanks.....and where they intersect what does that represent???

 

[alihaiderrrt]

thanks.....and where they intersect what does that represent???

if you can..do upload..please

 

[ahmadumar]

thanks.....and where they intersect what does that represent???

that represents nothing!

 

[Fatima18]

Hey guys.What is the colour of methy orange and phenolphtalein.How do these two indicators change colour in neuttral acidic and basic solutions?Are they both used in titration?Thanx!

 

[ahmadumar]

if you can..do upload..please

here it is

 

[ahmadumar]

Hey guys.What is the colour of methy orange and phenolphtalein.How do these two indicators change colour in neuttral acidic and basic solutions?Are they both used in titration?Thanx!

haven't u done any past papers? :O

 

[alihaiderrrt]

thanks...good luck with tomorrow paper...

 

[ahmadumar]

thanks...good luck with tomorrow paper...

and no problem
good luck to u too

 

[ahmadumar]

Hey guys.What is the colour of methy orange and phenolphtalein.How do these two indicators change colour in neuttral acidic and basic solutions?Are they both used in titration?Thanx!

however,
phenolphtalein is colourless in acid and red in alkali
methyl orange is red in acid and yellow in alkali
and u should also know color about litmus ppr red in acid & blue in alkali

 

[ahmadumar]

thanks...good luck with tomorrow paper...

now goodnight
best ov all

 

[alihaiderrrt]

Hey guys.What is the colour of methy orange and phenolphtalein.How do these two indicators change colour in neuttral acidic and basic solutions?Are they both used in titration?Thanx!

methyl orange in strongly acidic solution is red...it changes color in pH 4....in strongly alkaline solution its color is yellow
phenolphthalein in acidic solution is colorless...changes color in pH 9... in strongly alkaline solution it is red........

 

[Fatima18]

methyl orange in strongly acidic solution is red...it changes color in pH 4....in strongly alkaline solution its color is yellow
phenolphthalein in acidic solution is colorless...changes color in pH 9... in strongly alkaline solution it is red........

thanx! xd