Chemistry P31

[bluefa1con]

BOTH OF THEM WERE """""""""""""""IRON ELECTRODES""""""""""""""

THEY SHOWED YOU THE DIRECTION OF CURRENT
AAAAAAAAAAAAAAAAAAA
LOSS OF ELECTRON = OXIDATION
AAAAAAAAAAAAAAAAAAAAAAAAAAA *************
now can you type normally

 

[Razo513]

i rote sodium and calcium
cux i thought tht onli a higher metal in the series would displace zinc and react wid it..guess it ws silly of me

i swear i thought the same thing

 

[Razo513]

i rote,vanadium in the first one and iron ind a second one..any1 thnks its ryt?

did the same

 

[Abdullah Ali]

http://www.xtremepapers.com/community/threads/are-grade-thresholds-true.17107/

just have a look at dis thread... and plz reply

 

[white rose]

me too and the reason i wrote wz tht
nitride needs 3 electron more to reach the noble gas config. whereas lithium needs to lose one .......... so 3 lithium ions donate their electron to 1 nitride ion to make each stable...................
and wat wz the formula of a nitride ion .........N3- ....................ryt !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

i alsa rote da same reason & yeah it ws N3-

 

[EpicLol]

Ppl, enjoy the fact that u r done with like most of the exams and u have like a weeks time to relax and enjoy

Here watch this video and get motivated for the upcoming exams....everything will be alright

 

[Osmix1995]

why salt will increase rate of corrosion or whatever the question was?

 

[Razo513]

what is the type of reaction? substitution or photochemical?

photochemical

 

[EpicLol]

photochemical

they are both correct.....

 

[L-Girl]

did the same

no the second one is vanadium3+ to vanadium4+ this is because there is an increase in the oxidation state, and so it is oxidation

 

[white rose]

photochemical

i also rote photochemical

 

[white rose]

no the second one is vanadium3+ to vanadium4+ this is because there is an increase in the oxidation state, and so it is oxidation

yeah its rite

 

[Osmix1995]

no the second one is vanadium3+ to vanadium4+ this is because there is an increase in the oxidation state, and so it is oxidation

yes and the one above was V to cause it was a oxidizing agent (was reduced from V3+ to V2+ )

 

[L-Girl]

in

yes and the one above was V to cause it was a oxidizing agent (was reduced from V3+ to V2+ )

indeed

 

[IGCSE O/L student]

the smartest kid in my class said it is A
but though i think you are right,
but it seems to me that both do

i wrote A, coz the electrode A gains an oxygen atoms, and loses electrons

 

[raysonzaffar]

THEY SHOWED YOU THE DIRECTION OF CURRENT
AAAAAAAAAAAAAAAAAAA
LOSS OF ELECTRON = OXIDATION
AAAAAAAAAAAAAAAAAAAAAAAAAAA *************
now can you type normally

if u hav 2 eyes then u must have seen tht there were bubbles Around A so "A" RUSTED BUT U R ALSO CORRECT ABT "B"..............HOPE BOTH OV them ARE CORRECT.......if the reasons stated are correct !!!!!!!!!!!!!!!!!!!!!!

 

[IGCSE O/L student]

i said it was A, i thought the anode meant a loss of electrons

that's true

 

[Abu mota]

Ppl, enjoy the fact that u r done with like most of the exams and u have like a weeks time to relax and enjoy

Here watch this video and get motivated for the upcoming exams....everything will be alright

this is way better

 

[Alan Khaledi]

the smartest kid in my class said it is A
but though i think you are right,
but it seems to me that both do

it is A because even though it was a chemical cell, the positive electrode is the anode and anode is always where oxidation occurs

 

[L-Girl]

it is A because even though it was a chemical cell, the positive electrode is the anode and anode is always where oxidation occurs

No, in a cell, the negative electrode is the anode, and oxidation occurs there