how was chemistry paper 22

[Malik777]

same for physics please phy 43

I think Gt for Phy must be below 36 because the graph question was very difficult #/22

 

[syed1995]

it had to be a covalent chloride

They asked for a Period 3 chloride which conducts electricity when soluble. The answer was indeed Al and it's correct.

AlCl3 + 6H2O --> [Al(H2O)6]2+ + 3Cl-

[Al(H2O)6]2+ --> Al(H2O)5OH + H+ .. so yeah it'd conduct electricity ... AND H isn't in period 3 so that's incorrect.

 

[syed1995]

bataya nhi no prob whats done is done . ill remember it for the rest of my life now

I made that mistake in my mock .. And like you said.. one remembers his mistakes for the rest of his life.. and didn't make it in CIE

 

[A star]

They asked for a Period 3 chloride which conducts electricity when soluble. The answer was indeed Al and it's correct.

AlCl3 + 6H2O --> [Al(H2O)6]2+ + 3Cl-

[Al(H2O)6]2+ --> Al(H2O)5OH + H+ .. so yeah it'd conduct electricity ... AND H isn't in period 3 so that's incorrect.

Al was not the only answer dude -_-

 

[A star]

They asked for a Period 3 chloride which conducts electricity when soluble. The answer was indeed Al and it's correct.

AlCl3 + 6H2O --> [Al(H2O)6]2+ + 3Cl-

[Al(H2O)6]2+ --> Al(H2O)5OH + H+ .. so yeah it'd conduct electricity ... AND H isn't in period 3 so that's incorrect.

i wrote Phosphorus and it is period 3 and disolves to form HCl which conducts

 

[syed1995]

i wrote Phosphorus and it is period 3 and disolves to form HCl which conducts

Well Al is correct as well. My teacher confirmed it.

 

[A star]

Well Al is correct as well. My teacher confirmed it.

well ok some people saying and my sir saying it is wrong idk i was confused on this point so choose phosphorus

 

[syed1995]

well ok some people saying and my sir saying it is wrong idk i was confused on this point so choose phosphorus

Well.. here's some info which proves it further.

That's from Wikipedia page of AlCl3.. honestly I picked Al as a tukka but now it's confirmed correct

 

[A star]

Well.. here's some info which proves it further.

That's from Wikipedia page of AlCl3.. honestly I picked Al as a tukka but now it's confirmed correct

well all i know is phosphorus my answer is corect

 

[A star]

I think Gt for Phy must be below 36 because the graph question was very difficult #/22

if it is i will jump to the empire state building in joy of getting A in p2

 

[MONJUR HASAN NISHAD]

if it is i will jump to the empire state building in joy of getting A in p2

Hydrogen is also correct, right?

 

[syed1995]

Hydrogen is also correct, right?

NOT AT ALL.. it asked for a Period 3 chloride.

Hydrogen is in Period 1.

 

[MONJUR HASAN NISHAD]

NOT AT ALL.. it asked for a Period 3 chloride.

Hydrogen is in Period 1.

They asked for a covalent chloride from the list of elements given in the periodic table on the top of the question. It does not have to be from period 3

 

[syed1995]

They asked for a covalent chloride from the list of elements given in the periodic table on the top of the question. It does not have to be from period 3

as far as I remember it asked for a period 3 chloride. If it asked from the elements then H would be correct. I would say confirm from some other people as well whether it asked for Period 3 or from the given elements.

 

[MONJUR HASAN NISHAD]

[quoate="syed1995, post: 527220, member: 17088"]They asked for a Period 3 chloride which conducts electricity when soluble. The answer was indeed Al and it's correct.

AlCl3 + 6H2O --> [Al(H2O)6]2+ + 3Cl-

[Al(H2O)6]2+ --> Al(H2O)5OH + H+ .. so yeah it'd conduct electricity ... AND H isn't in period 3 so that's incorrect.[/quote]
AlCL3 is an ionic chloride which conducts electricity. Al2Cl6 is a covalent chloride which does NOT conduct electricity.

 

[MONJUR HASAN NISHAD]

as far as I remember it asked for a period 3 chloride. If it asked from the elements then H would be correct. I would say confirm from some other people as well whether it asked for Period 3 or from the given elements.

What sort of gt do you expect? If it rises above 46 I will be in trouble..... :'(

 

[syed1995]

What sort of gt do you expect? If it rises above 46 I will be in trouble..... :'(

Well I found the paper relatively easy.. All of my friends from my center found the paper very easy.. even the weaker candidates were saying they could get 40 above.. So One never knows what will happen.

I think it will remain in the 45-47 range...

 

[MONJUR HASAN NISHAD]

Well I found the paper relatively easy.. All of my friends from my center found the paper very easy.. even the weaker candidates were saying they could get 40 above.. So One never knows what will happen.

I think it will remain in the 45-47 range...

I messed up the last question. Apart from it everything is fine except for a couple of slips worth 1 or 2 marks. How much do you expect to get?

 

[A star]

Well I found the paper relatively easy.. All of my friends from my center found the paper very easy.. even the weaker candidates were saying they could get 40 above.. So One never knows what will happen.

I think it will remain in the 45-47 range...

i hope physics is a bit lower 43 then i would be happy

 

[syed1995]

I messed up the last question. Apart from it everything is fine except for a couple of slips worth 1 or 2 marks. How much do you expect to get?

Me? My paper went awesome. I completed it in 30 minutes or so.. and went through the whole paper again.. Apart from 3 marks of the 1st question and 2 marks for that Cl2 to ICl increase(Doubtful in both those) .. My paper went good and all answers have been verified.

Insha Allah hoping to get marks in the 50s