NaOI

[blackeyed]

What is the charge on 'I' in 'NaOI'?
Thank you

[another-view]

£2.99 for the first six months then £5.00 a month after that.

[blackeyed]

lol
i was talking in terms of chemistry.
thanx anyways for answering

[chakka35]

OK, so what, chemically, is NaOI? Sodium oxy-iodide? Never heard of it.

[factor-fiction]

Never heard of NaOI. Are you sure you have copied the homework question down correctly?

[factor-fiction]

Perhaps it said NaCl not NaOI

[blackeyed]

Yup,it is NaOI although i don't know what you call it.
We get NaOI when we react iodine with sodium hydroxide.

[Jumbuck]

it is called sodium oxyiodide

[theprof]

Tonight's chemistry question:

Look at the following chemical equation:

3I2 + 6NaOH = NaIO3 + 5NaI + 3H2O

Discuss in the context of the original question.

[blackeyed]

O3!
You sure you got this thing right

[theprof]

OK. Tell me why not.

[blackeyed]

because oxygen's oxidation number is -2,if there are 3 oxygen atoms then the combined oxidation number for O3 becomes -6 , that, coupled with the -1oxidation number of iodine makes the total negative charge to be -7.However, there is only one sodium with an oxidation number +1,therefor,the the +ve and -ve charges are not totally cancelled out and thats why i think NaOI3 cannot exist.

[Teddio]

NaOI is chemically analogous to NaOCl (sodium hypochlorite) The I in NaOI is not charged. However the OI ion carries a charge of -1. Perhaps you wish to know the oxidation state of the iodine atom?

[blackeyed]

yes, i'd really grateful for that.

[theprof]

So NaOI3 cannot exist. Tell me about NaIO3.

[blackeyed]

uh sorry, i wrote NaIO3 as NaOI3
and , prof, i ' think' NaIO3 cannot exist, if it does you tell me how

[theprof]

I think you should think this through a bit more.

http://www.sigmaaldri..._PNO|BRAND_KEY&F=SPEC

http://msds.chem.ox.a...SO/sodium_iodate.html

http://www.sciencelab...Sodium_iodate-9927269

[blackeyed]

thanx prof, but it may take me a while to go through those links

[maelogman]

Some wierd answers so far! NaOI iused to be sodium hypoiodite, now sodium iodate(I). The OI ion has a charge of -1; the iodine atom has an oxidation state (sort of charge) of +1
Cheers, Maelogman

[blackeyed]

oh, thanx maelogman that cleared my doubt!

[theprof]

"NaOI iused to be sodium hypoiodite, now sodium iodate(I)"

Really? Even more weirder answers!

Sodium iodate is the sodium salt of iodic acid. Formula: NaIO3. MW: 197.89 CAS Number: 7681-55-2

Sodium hypoiodite is the sodium salt of hypoiodus acid. Formula: NaIO MW: 165.89 CAS Number: 22468-64-0

Hypoiodites behave both as reducing and oxidising agents. This behaviour results in them rapidly disproportionating into iodites and iodides. However, Sodium hypoiodite, is not sodium iodate(I), whatever that may be.