If you have any question on chem p6 im ready you guys. Don't Worry!!

[IGCSE O/L student]

so if i missed a point its ok ? what if i went through them all do i lose a mark ?

u mst make sure ur graph is smooth, whether all da points r dere or not, k?

 

[Hamzeh S]

u mst make sure ur graph is smooth, whether all da points r dere or not, k?

Kaay thx but i know smooth means by hand without ruler but how do i make sure its perfectly smooth sorry for bothering u

 

[IGCSE O/L student]

Step 1:
Fill a burette with dilute acid to zero mark.
Step 2:
Put 25 cm
3 of dilute sodium hydroxide into a conical flask with a pipette.
Step 3:
Add few drops of a suitable indicator such as universal indicator.
Step 4:
Run the acid from the burette into the flask of alkali until one or more drop of acid is enough to turn the indicator from violet to green.
Step 5:
The volume of acid used to neutralize the 25 cm
3 of alkali is noted. E.g. 23 cm3 of HCl
Step 6:
The process is repeated with the volume noted for the acid and the same volume of alkali used, but without the indicator.
Step 7:
Evapourate most of the water from the solution using a hot water bath in a crystallizing dish.
Let the solution cool and crystallize out. Filter the crystals on a filter paper and dry them.

That's titration in order to get crystals of sodium chloride

it shud b violet to red coz u cn nvr get a neutral solution wen titratin. one drop more is enuf 2 chnge it into an acidic solution (in dis case, it'll form an acidic solution)

 

[IGCSE O/L student]

Kaay thx but i know smooth means by hand without ruler but how do i make sure its perfectly smooth sorry for bothering u

hu said ur botherin me? i luv it. pluss, it helps 2 refresh my memory. nyways, gettin bck 2 business, u shud make sure ur lyn is not crooked, n has a nyc curve. curves shud not b sudden, wid a sudden break in a straight lyn, da lyn shud bend 2wards da points.

 

[slayer]

Hello guys, Can anyone help me with Q4ei) http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s09_qp_6.pdf should I just use the graph? cause when I use the graph I get a wrong answer

 

[Hamzeh S]

Hello guys, Can anyone help me with Q4ei) http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s09_qp_6.pdf should I just use the graph? cause when I use the graph I get a wrong answer

he said if repeated at temeperature 70 so the graph would be steeper draw a steeper graph and find the point from it

 

[Mahdi]

I really know I'm too late asking this question...but i need to know the basics of how to plan an experiment. It depends on some conditions, but I'm often clueless what steps are to be taken.. It will be a great help if someone can help me with this. Any simple explanation will also work...hopefully!

 

[thats_me]

Hello guys, Can anyone help me with Q4ei) http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s09_qp_6.pdf should I just use the graph? cause when I use the graph I get a wrong answer

yes it says from ur graph n u even have to show how u got it from the graph

 

[jaida al hinai]

GD LUCK 2 ALL OF U GUYS .................i hope its gonna be easy

 

[thats_me]

GD LUCK 2 ALL OF U GUYS .................i hope its gonna be easy

thx & u 2

 

[jaida al hinai]

thx & u 2

any time

 

[thats_me]

I really know I'm too late asking this question...but i need to know the basics of how to plan an experiment. It depends on some conditions, but I'm often clueless what steps are to be taken.. It will be a great help if someone can help me with this. Any simple explanation will also work...hopefully!

well in the planning ques all they want is to c that hw well u hav understood the ques so think practicaly n thn do it try reading process like chromatography,, titration,,filteration n all ..

 

[jaida al hinai]

TRY THIS AS A REVISION.............U CAN JUST FOCUS ON 5,7,8 FOR P.6

 

[Hamzeh S]

Apparatus names plz ?

 

[Mahdi]

well in the planning ques all they want is to c that hw well u hav understood the ques so think practicaly n thn do it try reading process like chromatography,, titration,,filteration n all ..

Thank you very much!

 

[jaida al hinai]

Apparatus names plz ?

its in the link above

 

[Legendary3li]

Apparatus names !

 

[thats_me]

Thank you very much!

ur most welcome

 

[Mahdi]

TRY THIS AS A REVISION.............U CAN JUST FOCUS ON 5,7,8 FOR P.6

Thank you very much..appreciate that..

 

[jaida al hinai]

Thank you very much..appreciate that..

any time