Question

how do you find the formula for Sodium carbonate

Answer 1

i know that its Na2CO3 but how do you get that???

Answer 2

no Na2CO3 is sodium carbonate

Answer 3

for bicarb u need to add an H+ ion
NaHC03

Answer 4

yeah thats what i need... im asking how you get it...

Answer 5

Basically, you add CO2 to NaOH

Answer 6

CO2 + 2 NaOH → Na2CO3 + H2O
Na2CO3 + CO2 + H2O → 2 NaHCO3

Answer 7

So, by adding more CO2 to NaOH we get sodiumbicarbonate

Answer 8

does that help?

Answer 9

no not rly i entered my answer and t was right. my question is where does the O3 come from?

Answer 10

i understand Sodium is 1+ and carbonate is 2- but i just dont know where the O3 comes from

Answer 11

You have to look at the balanced equation

Answer 12

what do you mean by that?

Answer 13

Carbon is tetravlent(it can form 4 bonds)
O- +Na
|
C=O
|
O-+Na

Answer 14

ok..

Answer 15

idk im sorry i just rly dont understand chem at all...

Answer 16

its ok:)

Answer 17

here is a link for the structure of NaHCO3
http://en.wikipedia.org/wiki/File:SodiumBicarbonate.png

Answer 18

ok thank you i will chec
k it out

Answer 19

ur welcome gud luck

Answer 20

For a start, we know that a sodium atom naturally has 1 electron in its outer shell, right? this outer shell electron will easily be used to fill the shell of the other atoms, thus sodium will be Na^+

Answer 21

The carbonate ion has a carbon atom and three oxygen atoms, carbon has four outer shell electrons and oxygen has two vacancies in its outer orbital,
Summing the electrons; 4 from carbon + 3 x(-2) for the oxygen
we have - 2 electrons i.e, one shell with two vacancies .

Knowing that our species is Sodium Carbonate, all that is left is to do find how many of each sodium ions and and carbonate ions sum to a neutral molecule


\[aNa ^{+} + bCO _{3}^{-2} = 0\]

the simplest solution is two sodiums and one carbonate,

ie \[2Na ^{+}+1xCO _{3}^{-2} = 0\rightarrow Na _{2}CO _{3}\]