Threshold Chemistry P32

[utky]

What do You Guys Think? In My Opinion, The Paper was Normal. 28 Would be For an A.

 

[GCE As and a level]

What do You Guys Think? In My Opinion, The Paper was Normal. 28 Would be For an A.

how much u got the Mr of "M" in Q2 ??!!

 

[Solostar]

27.8

 

[Solostar]

M was Na

 

[Sharmin Zinia]

I messed up Q.2 :'(

 

[GCE As and a level]

27.8

i got it 30 :s
is this correct or it will be wrong and i will lose the 5 marks :s

 

[GCE As and a level]

I messed up Q.2 :'(

Most of us
Dont worry
isa GT will be low

 

[utky]

Well, M was Na(Sodium). The Cation was Mg and the Anion was the Sulphate ion. That is what I got.

 

[GCE As and a level]

Well, M was Na(Sodium). The Cation was Mg and the Anion was the Sulphate ion. That is what I got.

wat about FB5,FB6,FB7 ??? and the observation for FB8??
how much u got the conc in Q1 ??

 

[Solostar]

I

i got it 30 :s
is this correct or it will be wrong and i will lose the 5 marks :s

I am not sure about the marks, you might get ecf

 

[Solostar]

.

wat about FB5,FB6,FB7 ??? and the observation for FB8??
how much u got the conc in Q1 ??

.093 mol dm-3

 

[GCE As and a level]

.

.093 mol dm-3

me 2

 

[GCE As and a level]

but

I

I am not sure about the marks, you might get ecf

i wrote M as Na

 

[utky]

wat about FB5,FB6,FB7 ??? and the observation for FB8??
how much u got the conc in Q1 ??

Well, I messed up the Organic Part a bit. The 1st Question Only. As We were sharing Chemicals, My KmN04 and Tollens Reagent got Contaminated (Ithink So). Instead of going from Purple to Colourless, it went dirty brown.
My FA5 was Dirty brown, FA6 was Colourless but I wrote Silver Mirror. I know this is stupid. FA7 was also dirty brown.
The Next Experiment, FA6 was colourless while FA7 was dirty brown. Got some Pretty Messed Up Results. I hope I get some 2 Marks out of total 5.

 

[GCE As and a level]

Well, I messed up the Organic Part a bit. The 1st Question Only. As We were sharing Chemicals, My KmN04 and Tollens Reagent got Contaminated (Ithink So). Instead of going from Purple to Colourless, it went dirty brown.
My FA5 was Dirty brown, FA6 was Colourless but I wrote Silver Mirror. I know this is stupid. FA7 was also dirty brown.
The Next Experiment, FA6 was colourless while FA7 was dirty brown. Got some Pretty Messed Up Results. I hope I get some 2 Marks out of total 5.

inshallah u will score more than 2 MARKS
I got silver mirror with FB5 only
Colour change to colourless was only for FB7
No reaction for FB6
These are my results >>> FB5 was aldehyde FB6 was ketone and FB7 was alcohol {ACCORDING TO MY RESULTS}
FB8, also the color changed to colorless with KMNO4 and effervescence were observed with carbonate salt

 

[Solostar]

but

i wrote M as Na

Have you done calculations in the previous part?

 

[GCE As and a level]

Have you done calculations in the previous part?

Sure,If no then how did i got it
I found the Mr for the hydarated salt ................... then i found the Mr of Na as 30 ..... then i wrote that 30 is close to 23

 

[oahmed64]

Guys what did you write in the uncertainty question?