IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: ahlymeteb on November 11, 2009, 12:12:51 pm

Title: chemistry paper 3 ...... heeeelp
Post by: ahlymeteb on November 11, 2009, 12:12:51 pm
hiiii everyone

i am taking chemistry bio eng busin this oct/nov session (all are extended)

i've finished all except chem paper 3 and 1

so anyone did any of these subjects

or doing chemistry??

share your ideas here please

I always have confusion in the chemical calculations... 
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:15:36 pm
what confusion do u exactly have??as in what topics??i may help...even i am doing same
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:34:52 pm
uka chod isemin mada kar!!

Write an ionic equation for the precipitation of the insoluble salt, silver(I) chloride.
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:36:19 pm
Cl- + e- ---> Cl


u got it shrey??its only ionic to sirf yeh hi hogi
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:37:38 pm
just this much???  ??? ???

why not silver and others??

i guess something fishy?!!
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:38:32 pm
abbey they are asking for ionic naa....
otherwise tell me the whole question...then i'll tell u if it's correct or not
Title: Re: chemistry paper 3 ...... heeeelp
Post by: nits94 on November 11, 2009, 12:39:29 pm
adi its silver chloride.. so wont it be AgCl2= Ag2+ + Cl-???
Title: Re: chemistry paper 3 ...... heeeelp
Post by: Ghost Of Highbury on November 11, 2009, 12:40:05 pm
yes i too think it shud be Ag+ + Cl- ionic eqn.
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:40:56 pm
here it is!!

Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:41:40 pm
yaar but h says its the precipitation reaction...so chlorine is getting precipitated cuz it is forming by the equation that i gave
Cl- + e- ---> Cl
isn't it???
dude get us the question...then it'll be simpler
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:42:14 pm
i have alread done it!!!

TL!!
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:42:42 pm
now this will be

Ag+ + Cl- --> AgCl
Title: Re: chemistry paper 3 ...... heeeelp
Post by: Ghost Of Highbury on November 11, 2009, 12:43:05 pm
lol..told u
Title: Re: chemistry paper 3 ...... heeeelp
Post by: nits94 on November 11, 2009, 12:43:18 pm
adi the 1 which u were doing is like electrolysis at anode.. ionic doesnt hv 2 be with just 1 element
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:43:49 pm
thanx guys!! ;)
Title: Re: chemistry paper 3 ...... heeeelp
Post by: Ghost Of Highbury on November 11, 2009, 12:44:02 pm
Quote from: @d!_†oX!© on November 11, 2009, 12:41:40 pm
yaar but h says its the precipitation reaction...so chlorine is getting precipitated cuz it is forming by the equation that i gave
Cl- + e- ---> Cl
isn't it???
dude get us the question...then it'll be simpler

chlorine is not precipitated. it is silver chloride.
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:44:55 pm
yeah i know...i was thinking on a different track...now see my latest ans...
Title: Re: chemistry paper 3 ...... heeeelp
Post by: Ghost Of Highbury on November 11, 2009, 12:45:53 pm
where?!!?!
Title: Re: chemistry paper 3 ...... heeeelp
Post by: @d!_†oX!© on November 11, 2009, 12:46:20 pm
Quote from: @d!_†oX!© on November 11, 2009, 12:42:42 pm
now this will be

Ag+ + Cl- --> AgCl
this one above......
Title: Re: chemistry paper 3 ...... heeeelp
Post by: Ghost Of Highbury on November 11, 2009, 12:46:56 pm
told u.
Title: Re: chemistry paper 3 ...... heeeelp
Post by: ahlymeteb on November 11, 2009, 12:48:23 pm
well nothing specific

i wanted to discuss everyone's preparation for it

you r having the paper 2morrow right??

Title: Re: chemistry paper 3 ...... heeeelp
Post by: ~~~~shreyapril~~~~ on November 11, 2009, 12:49:18 pm
Quote from: @d!_†oX!© on November 11, 2009, 12:44:55 pm
yeah i know...i was thinking on a different track...now see my latest ans...
By the way adi where was the track to!!?? :P