GT for Chemistry paper 22 AS.

[Ahmed Tariq]

ppl wats d element dat burns with a coloured flame . ppr ws a bit tough

Sodium.

 

[SalamH]

according 2 my txt bk answer is phosphorous . wats the entalpy mine ws negative

 

[dayeed]

negative hee thi -(onetwonine)........
i found the paper to be really eas yand short i will only lose 3 marks IA .......

 

[SalamH]

I didnt like the org qs at all . wats d oxide which dissolve and wat reacts with water n also d pH

 

[00100]

what was the empirical formula in q3??

 

[Shoaib idiot boy]

what was the empirical formula in q3??

I guess it was c6h7o7

 

[Shoaib idiot boy]

I did the pressure and temperature thing with the le chatliers principle and co+2h2o=ch3cooh was not a reversible reaction many of my friends did the same mistake!!!

Moderator Edit : Avoid Abusive Langauge

 

[thunderingthunder]

I got CHO as the empirical formula and suspect that it is wrong!
What was the empirical formula?
In Q5 what functional group was present in G?
And what was the enthalpy change?Mine was -129 kJ/mol.

 

[thunderingthunder]

I didnt like the org qs at all . wats d oxide which dissolve and wat reacts with water n also d pH

Organic sucked big tym

 

[Shoaib idiot boy]

I got CHO as the empirical formula and suspect that it is wrong!
What was the empirical formula?
In Q5 what functional group was present in G?
And what was the enthalpy change?Mine was -129 kJ/mol.

Enthalpy change was -129 and the last question molecular formula was C3H6O3 in the organic one and u had to make structural groups ...and the emperical formula we had to take out was some what C6H7O7...we were multiplying it with 6 till I remember ...

 

[Shoaib idiot boy]

And it was DISSOLVED REACT REACT ? Right ? In the 1st question!!!

 

[thunderingthunder]

And it was DISSOLVED REACT REACT ? Right ? In the 1st question!!!

Yep,mine was the same!!
And why did we multiply with 6?
And what about the temp,pressure and catalyst?
Did you appear for the planning paper as well??

 

[Shoaib idiot boy]

I didnt like the org qs at all . wats d oxide which dissolve and wat reacts with water n also d pH

It was Dissolve for na and React for the other two confirmed

 

[Shoaib idiot boy]

Yar we didn't have to do it by le chatliers principle as it wasn't a reversible reaction u had to simply explain it with the kinectic theory of molecules ...I lost 4 marks here!!!

 

[Shoaib idiot boy]

Yep,mine was the same!!
And why did we multiply with 6?
And what about the temp,pressure and catalyst?
Did you appear for the planning paper as well??

Yep,mine was the same!!
And why did we multiply with 6?
And what about the temp,pressure and catalyst?
It was coming in decimals and once we multiplied the moles coming by six they gave a whole number for carbon hydrogyen and oxygen
Did you appear for the planning paper as well??

 

[dJB]

Guys one of my frnd drew displayed structure rather than structural in all the question will he get marks???

 

[Shoaib idiot boy]

Guys one of my frnd drew displayed structure rather than structural in all the question will he get marks???

Even I did in one it doesn't make any difference they'll give the marks

 

[thunderingthunder]

Guys one of my frnd drew displayed structure rather than structural in all the question will he get marks???[/quote/]
I think 1 or 2 marks may be deducted!

 

[SalamH]

how did you ppl draw d skeletal formula

 

[floral123]

And it was DISSOLVED REACT REACT ? Right ? In the 1st question!!!

i did the same but i read in a book that (the second one) dissolves" but has ph of 6.5...so how can it be that it dissolves and has ph less than 7??

not naming the compound coz of long 24 hours