Gen Chem Question

[Utes]

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First off, I'm pretty dumb... With that out of the way....

Which of the following is not considered a Chlorate?

A) ClO2-
B) ClO3-
C) ClO4-
D) ClO4 2-
E) All are Chlorates

I put A as it is Chlorite
B is Chlorate
C is Perchlorate
I didn't know what D would be, some isotope of Perchlorate?

The answer is D ClO4 2-

Could someone help explain why it isn't A Chlorite?

Thanks,
Utes

 

[Utes]

A is hypochlorate, not a chlorite. Hmmm, does that answer your question...??

On page 288 of Kaplan's Blue book it says

ClO- is Hypochlorite
ClO2- is Chlorite
ClO3- is Chlorate
ClO4- is Perchlorate
and it doesn't say what ClO4 2- is

I don't claim to know what I'm talking about, I'd just like an explanation so I don't get it wrong on the actual DAT.
Thanks

 

[calbear14]

Keep in mind the numbers should be read as subscripts. ClO2- is chlorite. It has one less oxygen than the oxyanion chlorate, ClO3-. All the chlorate oxyanions have a 1- charge. D is correct because a 2- charge would not make it a member of the chlorate oxyanions.

 

[Utes]

Keep in mind the numbers should be read as subscripts. ClO2- is chlorite. It has one less oxygen than the oxyanion chlorate, ClO3-. All the chlorate oxyanions have a 1- charge. D is correct because a 2- charge would not make it a member of the chlorate oxyanions.

Thank you, I appreciate your help!

Utes

 

[drat]

Keep in mind the numbers should be read as subscripts. ClO2- is chlorite. It has one less oxygen than the oxyanion chlorate, ClO3-. All the chlorate oxyanions have a 1- charge. D is correct because a 2- charge would not make it a member of the chlorate oxyanions.

Yup, I'm an idiot. I am going to edit my answer up there ^^ 'cause I don't like leaving wrong info on the forum in case people don't read the whole thread. Sorry, Utes, for any confusion I may have caused.

 

[jdcinza13]

ClO4- is referred to as perchlorate. anything with an extra oxygen is referred to that way. You will see that a little bit more in Organic such as PBA or Perbenzoic Acid, Peracetic Acid, Performic Acid etc.

 

[luder98]

ClO4 2- does not exist.