- Messages
- 497
- Reaction score
- 100
- Points
- 38
haochen said:xIshtar said:For Hydra:
The formula for the acid is C4H4O4 right.
So, it is an acid. As it is dibasic, 2 H+ ions for every one mole reacted.
Now, taking this into account, it should be possible to split it into two equal parts..
HOOCCH=HOOCCH
The truth is, the question is rather challenging, and I do not get the exact method behind the answer. I have drawn it out a couple of times and still nothing.
Maybe some body could enlighten us all. *Cough* haochen. *Cough*
but i dont know what question ur talking about ?? :Search:
can u tell me
and ill try to explain it
moonlight22 said:Q.P--> http://www.xtremepapers.me/CIE/Cambridg ... _qp_12.pdf
M.S--> http://www.xtremepapers.me/CIE/Cambridg ... _ms_12.pdf
Question 8
answer: "A" silver is a reactive metal ! how ? isn`t silver under copper in the reactivity series ??
why not "B" !!!!!!! OMG IT`S SOOOOOO TRICKY MAAAAN
A is the answer (the question is to choose the one which is not correct)
because electroplating isnt about the reactivity.
and it is not B because u need to have the metal salt to perform electroplating
so the metal can be transfer from the anode(metal) to the cathode(spoon)
hope i helped
HyDraZin3 said:Question:- http://www.xtremepapers.me/CIE/Cambridg ... _qp_33.pdf
5 (b) (iv)
Mark scheme:- http://www.xtremepapers.me/CIE/Cambridg ... _ms_33.pdf
I am not able to understand the meaning of the word "dibasic" and from where the double bond came