Biology; Chemistry; Physics: Post your doubts here!

[luckywang]

I guess in aqueous solutions containing Cl- and OH-, Cl- always discharges !
correct me if im wrong.

according to my information, in aqueous solution is coz Cl ions is more concentrated! but in dilute solution is different thing...

 

[asd]

My conclusion: in aqueous solutions containing Cl- and OH-, Cl- always discharges ! unless stated dilute.

 

[Dukeofwin]

Lets put it this way, this discussion has gone on for 4 pages!
Which makes it evident that neither i'm going to change my opinion nor are other people.
So lets just keep it that way! I'll work my concepts and people disagreeing with me work their concepts! and Hope it pays off for someone!
And lets pray that electrolysis doesn't come!

 

[luckywang]

Lets put it this way, this discussion has gone on for 4 pages!
Which makes it evident that neither i'm going to change my opinion nor are other people.
So lets just keep it that way! I'll work my concepts and people disagreeing with me work their concepts! and Hope it pays off for someone!
And lets pray that electrolysis doesn't come!

impossible... sure got....

 

[Spidey21]

LOL

 

[ashiqbal]

how about this?
The solution was replaced by a dilute solution of an acid. Suggest which acid would
produce the same gases as those produced with concentrated aqueous sodium
chloride.
answer is HCl... in dilute HCl, OH is being discharge instead of Cl? but why the answer is HCl?

which year past paper?

 

[asd]

2008 atp june Q.no 3 part c

 

[asd]

I guess OH- will form H3O+ with H+ ions, making Cl- concentrated, so chlorine will be given out at anode, right?

 

[Spidey21]

June 2008 q 1 c (3)

 

[haha101]

??? no such Question

June 2008 q 1 c (3)

 

[Spidey21]

??? no such Question

oh my bad
june 11 p42, q 1 (iii).

just worried about the question and the unit they have given,,

 

[haha101]

oh my bad
june 11 p42, q 1 (iii).

just worried about the question and the unit they have given,,

misprint !!!

 

[Spidey21]

misprint !!!

you dont say..

 

[ali_1]

are you all science students where can i find commerce dudes

 

[haha101]

are you all science students where can i find commerce dudes

on commerce thread

 

[ISFSAT]

can anyone explain q 2 (b) plz?
http://www.xtremepapers.com/papers/...al O Level/Chemistry (5070)/5070_w05_qp_4.pdf

 

[asd]

0.5g?

 

[khizer shahab]

are you all science students where can i find commerce dudes

in examination hall!!!

 

[Tharindu]

Samples of sulphur dioxide are passed through acidified potassium dichromate....why does the colour change???

 

[asd]

can anyone explain q 2 (b) plz?
http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Chemistry (5070)/5070_w05_qp_4.pdf

tubes III, IV,V.
Must be Zinc because N displaced Copper but not Magnesium, so it must be less reactive than Mg, but more reactive than Cu.
displacement reaction. fact.
ZnCO3 will decompose to ZnO and CO2