Biology; Chemistry; Physics: Post your doubts here!

[bogus]

Important question... merchants guess paper says Dehydration.... what are we supposed to know about it reply please????

MustafaMotani ??

 

[MustafaMotani]

kitecrystal my misconception..

 

[MustafaMotani]

MustafaMotani ??

dehydration means widout water...

like dehydrated copper sulphate is white in colour and hydrated is blue
dehydrated cobalt chloride is blue and hydraed is pink

I dont know wat exactly is required for dehydration

 

[bogus]

dehydration means widout water...

like dehydrated copper sulphate is white in colour and hydrated is blue
dehydrated cobalt chloride is blue and hydraed is pink

I dont know wat exactly is required for dehydration

thanks but

 

[MustafaMotani]

thanks but

??

 

[MustafaMotani]

syed1995 wat was the anser to that giant molecular structure ?? iodine..??

 

[kitecrystal]

kitecrystal my misconception..

lol plz do explain the reason....

 

[syed1995]

4KO2 (s) + 2H2O (l) ---> 4KOH (aq) + 3O2 (g).

What if KO2 reacted with CO2 ? what will be the name of products and what will be the balanced equation?

 

[MustafaMotani]

lol plz do explain the reason....

it had valncy of +2 so I mixed it wid transition elements coz they mostly have +2 ... I knew it doesnt belong to 2nd group ..

 

[MustafaMotani]

4KO2 (s) + 2H2O (l) ---> 4KOH (aq) + 3O2 (g).

What if KO2 reacted with CO2 ? what will be the name of products and what will be the balanced equation?

I doubt if there will be reaction...

 

[syed1995]

syed1995 wat was the anser to that giant molecular structure ?? iodine..??

No idea dude .. no Marking scheme available....

let me paste the question here again .. and get opinions of others as well ..

what will be the answer to part (e) guys ???

 

[Spidey21]

4KO2 (s) + 2H2O (l) ---> 4KOH (aq) + 3O2 (g).

What if KO2 reacted with CO2 ? what will be the name of products and what will be the balanced equation?

will the reaction ever happen??

 

[kitecrystal]

it had valncy of +2 so I mixed it wid transition elements coz they mostly have +2 ... I knew it doesnt belong to 2nd group ..

ohk..:

 

[syed1995]

will the reaction ever happen??

exactly .. will it happen or not? if not , then why not?

 

[kitecrystal]

No idea dude .. no Marking scheme available....

let me paste the question here again .. and get opinions of others as well ..

what will be the answer to part (e) guys ???

carbon..

 

[MustafaMotani]

No idea dude .. no Marking scheme available....

let me paste the question here again .. and get opinions of others as well ..

what will be the answer to part (e) guys ???

lol its carbon..

 

[kitecrystal]

No idea dude .. no Marking scheme available....

let me paste the question here again .. and get opinions of others as well ..

what will be the answer to part (e) guys ???

which year?

 

[syed1995]

carbon..

hmm thanks ..

 

[syed1995]

which year?

2003.

 

[kitecrystal]

hmm thanks ..

np