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Confused about IUPAC Name of NaClO

I wrote sodium hypochlorite
but the MS says "sodium chlorate(I) ONLY "


wiki says the IUPAC name is sodium hypochlorite so im confused , would I still get the mark?


question 10b
http://filestore.aqa.org.uk/subjects/AQA-CHEM2-QP-JAN13.PDF
http://filestore.aqa.org.uk/subjects/AQA-CHEM2-W-MS-JAN13.PDF

thanks
NaClO is neutral, Na is +1, O is 2- so Cl has a 1+ oxidation state so sodium (i) chlorate ( as it has chlorine and oxygen)
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Avatar for alow
alow
19
Original post by glad-he-ate-her
NaClO is neutral, Na is +1, O is 2- so Cl has a 1+ oxidation state so sodium (i) chlorate ( as it has chlorine and oxygen)


That's not right. You don't say that sodium is in ox. st. (I) because that's all it can be. What you do have to specify is the oxidation state of chlorine.

Original post by chem revision
I wrote sodium hypochlorite
but the MS says "sodium chlorate(I) ONLY "


wiki says the IUPAC name is sodium hypochlorite so im confused , would I still get the mark?


question 10b
http://filestore.aqa.org.uk/subjects/AQA-CHEM2-QP-JAN13.PDF
http://filestore.aqa.org.uk/subjects/AQA-CHEM2-W-MS-JAN13.PDF

thanks


Sodium chlorate(I) is the systematic IUPAC name for the compound. Wikipedia says "sodium hypochlorite" as that is the name which has been grandfathered in, but is not systematic. It's the same reason you're allowed to call propan-2-one acetone and methanal formaldehyde.

You would only get the marks if you say sodium chlorate(I) .
Original post by alow
That's not right. You don't say that sodium is in ox. st. (I) because that's all it can be. What you do have to specify is the oxidation state of chlorine.



Sodium chlorate(I) is the systematic IUPAC name for the compound. Wikipedia says "sodium hypochlorite" as that is the name which has been grandfathered in, but is not systematic. It's the same reason you're allowed to call propan-2-one acetone and methanal formaldehyde.

You would only get the marks if you say sodium chlorate(I) .


Yeah i know that but im saying that is the oxidation state of sodium in this compound ( and all compounds) and oxygen is 2 (may be 1 in peroxides) so chlorine is +1 to make it neutral though i guess i could have omitted the sodium ox state as it is constantly the same
Reply 4
Avatar for alow
alow
19
Original post by glad-he-ate-her
Yeah i know that but im saying that is the oxidation state of sodium in this compound ( and all compounds) and oxygen is 2 (may be 1 in peroxides) so chlorine is +1 to make it neutral though i guess i could have omitted the sodium ox state as it is constantly the same


You need to state the oxidation state of chlorine as there are 4 different chlorate anions: https://www.wikiwand.com/en/Chlorate#/Other_oxyanions
Original post by alow
You need to state the oxidation state of chlorine as there are 4 different chlorate anions: https://www.wikiwand.com/en/Chlorate#/Other_oxyanions


Yeah i know, i was trying to show how we work out that it is +1
Original post by alow
That's not right. You don't say that sodium is in ox. st. (I) because that's all it can be. What you do have to specify is the oxidation state of chlorine.



Sodium chlorate(I) is the systematic IUPAC name for the compound. Wikipedia says "sodium hypochlorite" as that is the name which has been grandfathered in, but is not systematic. It's the same reason you're allowed to call propan-2-one acetone and methanal formaldehyde.

You would only get the marks if you say sodium chlorate(I) .


ah thanks for the explanation!

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