Unit 3B Chemistry :) How was the exams? Comment here :P

[Herald Grove]

i wrote P + I2 ---> pI3 i didnt balance it so, i guess that leaves me with just one mark :/

yea

 

[Herald Grove]

i wrote P + I2 ---> pI3 i didnt balance it so, i guess that leaves me with just one mark :/

Mine
2P+3I2 -2PI3
...do u think its correct?

 

[saba1996]

Do they care about the spelling? If yes.. Im finished :'(

 

[meisen]

Mine
2P+3I2 -2PI3
...do u think its correct?

yup thats right. i just forgot to balance it.

 

[Herald Grove]

i dont remember seeing anything which said sulfate was absent !

well me neither until all my friends were saying that! means we lost 2 marks minimum in the first table
what was the Y compound, was i calcium chloride
don't remember mine

 

[meisen]

Do they care about the spelling? If yes.. Im finished :'(

i think they do!

 

[Herald Grove]

Do they care about the spelling? If yes.. Im finished :'(

spelling of what

 

[saba1996]

spelling of what

lol my spelling sucks.. I think i wrote vigorous as vigourous..

 

[cardude456]

well me neither until all my friends were saying that! means we lost 2 marks minimum in the first table
what was the Y compound, was i calcium chloride
don't remember mine

Dude..........wasnt it Calcium Carbonate............??????

 

[Herald Grove]

Dude..........wasnt it Calcium Carbonate............??????

yea yea forgot!

the lime water and all that I remember!

 

[cardude456]

yea yea forgot!

You scared me!!!!!!!!

 

[Herald Grove]

Some questions I remember:
1) Why do you add the Iodine in small quantities?
2)Why use anhydrous calcium sulphate?
3) What is the 9th step?
4) Why is this question not suitable for large-scale manufacturing? (last question)

oh also
Why observations would you see when you add NaI to ---- don't rem?

 

[meisen]

lol my spelling sucks.. I think i wrote vigorous as vigourous..

i dont think it matters. they will know what it is! so its okay

 

[Herald Grove]

i dont think it matters. they will know what it is! so its okay

I read somewhere that if it doesn't change the meaning intended then they will mark correct, so, don't worry.
I had this problem where didn't have enough space for some questions - I am not good in summarising a point/

 

[Hailstorm94]

answer for that was clear solution no ppt formed

 

[Hailstorm94]

well me neither until all my friends were saying that! means we lost 2 marks minimum in the first table
what was the Y compound, was i calcium chloride
don't remember mine

it was caco3 calcium carbonate

 

[ithinkforit]

not really...

well it wasnt hard :/ but im scared of the grade booundaries now :O :O

 

[Herald Grove]

Some questions I remember:
1) Why do you add the Iodine in small quantities?
2)Why use anhydrous calcium sulphate?
3) What is the 9th step?
4) Why is this question not suitable for large-scale manufacturing? (last question)

oh also
Why observations would you see when you add NaI to ---- don't rem?

For question 1 - I wrote something about the reaction being very exothermic/volatile
2 - I think it should have been something about the drying agent but I wrote some fake stuff (water/needs further distillation)
3-

 

[Manasa]

well it wasnt hard :/ but im scared of the grade booundaries now :O :O

i messed up in the last questn... btw what were ur answers to the calculations?

 

[Manasa]

For question 1 - I wrote something about the reaction being very exothermic/volatile
2 - I think it should have been something about the drying agent but I wrote some fake stuff (water/needs further distillation)
3-

wat calculation answers did u get?