CHEMISTRY AS P33 PRACTICAL MAY 8 2014

[Angel's Heart]

I have stated all I am sure of, no more no less.

 

[vinit]

what I have been told is that for the titration, we will have to mix sulpheric acid and ammonia together and then titre KMnO4, the trick is that the colour change happens twice, once from colourless to green then from green to brown. I am 100% sure this is the practical 33.
for cations and anions, focus on carbonates, Iodide, Bromide, Chloride, Nitrate and Nitrite, Sulphate, Copper II, Lead II.
Anyone can upload a list of calculations that we can use?

isnt Kmno4 purple?

 

[HooR Muhammad]

what I have been told is that for the titration, we will have to mix sulpheric acid and ammonia together and then titre KMnO4, the trick is that the colour change happens twice, once from colourless to green then from green to brown. I am 100% sure this is the practical 33.
for cations and anions, focus on carbonates, Iodide, Bromide, Chloride, Nitrate and Nitrite, Sulphate, Copper II, Lead II.
Anyone can upload a list of calculations that we can use?

so the titration value should b taken whem it turns brown??

 

[_Ahmad]

Any tips for titration questions?

 

[Princess1997]

Plz help

 

[sachu06]

I'll upload it a day before the paper Wait mate!

when are you going to post it buddy ?

 

[rehmanmunir]

plz confrim when we will note down colour chang?

so the titration value should b taken whem it turns brown??

 

[rehmanmunir]

what I have been told is that for the titration, we will have to mix sulpheric acid and ammonia together and then titre KMnO4, the trick is that the colour change happens twice, once from colourless to green then from green to brown. I am 100% sure this is the practical 33.
for cations and anions, focus on carbonates, Iodide, Bromide, Chloride, Nitrate and Nitrite, Sulphate, Copper II, Lead II.
Anyone can upload a list of calculations that we can use?

But Kmno4 colour change from purple to colourless?

 

[roxylara]

Guys how different does the rough titration have to be from the final titration results? Like if rough titration is 20.5 should the final proper titration he around 20.4 or 20.5

 

[Suchal Riaz]

https://www.xtremepapers.com/commun...load-post-your-doubts-here.33074/#post-758366
Readings of 2013 past papers to practice working and graphs.

 

[100]

can somebody plzz tell me some tips on tests for gases and some people told me you atually dont have to test for it is this true?

 

[Arooj Akhtar]

Tell the reagents and the names like FB1 contains: Fe2+ like this

 

[ash1133]

anyone here knows about variant 34?

 

[pixxie2]

I have been told that the reagent for titration is ammonium iron(II) sulphate (refer to titration of mayjune 2007 paper32) We titrate that against KMnO4. For enthalpy reagents are Mg and H2SO4 . Cations for salt analysis are NH4+, Mn2+, Fe2+, Fe3+ and anions are SO42- and Cl-
This is what the lab assistant has predicted so we can't be a 100% certain.

 

[pixxie2]

I have been told that the reagent for titration is ammonium iron(II) sulphate (refer to titration of mayjune 2007 paper32) We titrate that against KMnO4. For enthalpy reagents are Mg and H2SO4 . Cations for salt analysis are NH4+, Mn2+, Fe2+, Fe3+ and anions are SO42- and Cl-
This is what the lab assistant has predicted so we can't be a 100% certain.

M talking abt varient 33 btw.....

 

[Logitech]

What about 31 anybody?

 

[Silverglitter]

I have been told that the reagent for titration is ammonium iron(II) sulphate (refer to titration of mayjune 2007 paper32) We titrate that against KMnO4. For enthalpy reagents are Mg and H2SO4 . Cations for salt analysis are NH4+, Mn2+, Fe2+, Fe3+ and anions are SO42- and Cl-
This is what the lab assistant has predicted so we can't be a 100% certain.

Oh my gosh i can't believe it but most of this was correct!!

 

[roxylara]

I have been told that the reagent for titration is ammonium iron(II) sulphate (refer to titration of mayjune 2007 paper32) We titrate that against KMnO4. For enthalpy reagents are Mg and H2SO4 . Cations for salt analysis are NH4+, Mn2+, Fe2+, Fe3+ and anions are SO42- and Cl-
This is what the lab assistant has predicted so we can't be a 100% certain.

You are right :O I wish I saw this before I didn't write Mn2 and NH4

 

[Princess1997]

Oh my gosh i can't believe it but most of this was correct!!

which varient
plz answer !!!!

 

[roxylara]

which varient
plz answer !!!!

33