how was the chemistry unit 2 paper?

[shruthi.s]

i thought it was an alright paper....except i had no idea how ammonia's pungent quality is an advantage when used as a fuel lol

 

[Xainab]

what did you write for that?

 

[Reem2195]

which variant?

 

[¦HaLo¦]

i thought it was an alright paper....except i had no idea how ammonia's pungent quality is an advantage when used as a fuel lol

i think the answer was that ppl wont get addicted to it like petrol so less solvent abuse

 

[¦HaLo¦]

wat did u write for y do we mix ammonia with petrol

 

[Xainab]

wat did u write for y do we mix ammonia with petrol

I wrote, ammonia alone is difficult to ignite, hence it is mixed with petrol :S

 

[¦HaLo¦]

I wrote, ammonia alone is difficult to ignite, hence it is mixed with petrol :S

i wrote that as it is toxic and corrosive so it is mixed with pertrol to minimise its toxicity

 

[Xainab]

and what about that question 'why is ozone used instead of chlorine as a disinfectant and etc etc, eventhough both are toxic?' What did you guys write for that?

 

[shruthi.s]

i just left out the qn asking how pungent ammonia is advantageous...had no idea...and i said that when using chlorine to disinfect, there are higher chances that it travels up to the atmosphere and depletes the ozone...but when ozone's used instead, this can be avoided...

 

[shruthi.s]

oh yeah it makes sense that there will be less solvent abuse....lol why didn't i think of that...oh well

 

[¦HaLo¦]

and what about that question 'why is ozone used instead of chlorine as a disinfectant and etc etc, eventhough both are toxic?' What did you guys write for that?

ozone does not form free radicals while chlorine does

 

[Romani2011]

For the advantage of the pungent smell of ammonia i wrote that people will be alerted that ammonia is present i a room etc

 

[Xainab]

Owww, everything I have written seems to be wrong!

 

[xIshtar]

I wrote it would be possible to tell when there are leakages

 

[¦HaLo¦]

wheres the markscheme when u need it

 

[Xainab]

i dont think the ms will be available anytime soon?

 

[¦HaLo¦]

it will be after our results

 

[¦HaLo¦]

For the advantage of the pungent smell of ammonia i wrote that people will be alerted that ammonia is present i a room etc

no offense but lol wat will we do if we smell ammonia run for our lives?

 

[Xainab]

Results? *Sigh

 

[¦HaLo¦]

ikr