Qualification > Sciences

chemistry help

<< < (2/2)

Ghost Of Highbury:

--- Quote from: nid404 on September 06, 2009, 04:00:37 pm ---second one

in KNO3
NO3 is ionic
so overall charge is -1
K is +1 and O3 is -6
so N is +5....+5-6=-1..overall charge becomes zero with K as +1
ok so

their states change to
NO2 again ionic with -1 charge
N becomes +3 since it is O2 and O2 is -4 overall
K remains as +1

and ox.state of O2 becomes 0
so Oxygen's ox.state increased but that of N decreased
so it's redox again

I've tried my best to explain



--- End quote ---
thanks a lot~
just 1 qestion...is the charge of the NO3 and NO2 --> -1

if so ...how did u get that?...
soo..if its SO4...is the oxidation state overall -2??

nid404:

--- Quote from: eddie_adi619 on September 06, 2009, 04:07:40 pm ---
--- Quote from: nid404 on September 06, 2009, 04:00:37 pm ---second one

in KNO3
NO3 is ionic
so overall charge is -1
K is +1 and O3 is -6
so N is +5....+5-6=-1..overall charge becomes zero with K as +1
ok so

their states change to
NO2 again ionic with -1 charge
N becomes +3 since it is O2 and O2 is -4 overall
K remains as +1

and ox.state of O2 becomes 0
so Oxygen's ox.state increased but that of N decreased
so it's redox again

I've tried my best to explain



--- End quote ---
thanks a lot~
just 1 qestion...is the charge of the NO3 and NO2 --> -1

if so ...how did u get that?...
soo..if its SO4...is the oxidation state overall -2??

--- End quote ---

this is a general rule
In an ion, the sum equals the overall charge

Ghost Of Highbury:
thought so..

tks a lot!!

u sure both r redox..

because astar told me that the 1st one is oxidation and the 2nd one is reduction...??@?@?@?

nid404:

--- Quote from: eddie_adi619 on September 06, 2009, 04:12:42 pm ---thought so..

tks a lot!!

u sure both r redox..

because astar told me that the 1st one is oxidation and the 2nd one is reduction...??@?@?@?

--- End quote ---

i just did redox yesterday...so according to my AS textbook..it's redox
but i'll ask my teacher tom and let you know if it's 200% redox or not..

Navigation

[0] Message Index

[*] Previous page