chem revision
Badges: 5
Rep:
?
#1
Report Thread starter 2 years ago
#1
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...2-QP-JAN13.PDF
http://filestore.aqa.org.uk/subjects...W-MS-JAN13.PDF

thanks
0
reply
Gerry-Atricks
Badges: 22
Rep:
?
#2
Report 2 years ago
#2
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)
0
reply
alow
Badges: 19
Rep:
?
#3
Report 2 years ago
#3
(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...2-QP-JAN13.PDF
http://filestore.aqa.org.uk/subjects...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) .
1
reply
Gerry-Atricks
Badges: 22
Rep:
?
#4
Report 2 years ago
#4
(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
0
reply
alow
Badges: 19
Rep:
?
#5
Report 2 years ago
#5
(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
0
reply
Gerry-Atricks
Badges: 22
Rep:
?
#6
Report 2 years ago
#6
(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
0
reply
chem revision
Badges: 5
Rep:
?
#7
Report Thread starter 2 years ago
#7
(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!
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • The University of Law
    Solicitor Series: Assessing Trainee Skills – LPC, GDL and MA Law - Guildford campus Postgraduate
    Wed, 29 Jan '20
  • Nottingham Trent University
    Postgraduate Open Day Postgraduate
    Wed, 29 Jan '20
  • University of Groningen
    Undergraduate Open Day Undergraduate
    Fri, 31 Jan '20

Have you ever signed up for an open day and then not gone to it?

Yes (99)
49.5%
No (101)
50.5%

Watched Threads

View All