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A2 chemistry question

Why is the oxidation number of sulphur in HS03 +4 and not +5?
Reply 1
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skrrrrrr
OP
9
Nevermind! Just realised that HS03 is an anion with a -1 charge. Whoops.
Original post by skrrrrrr
Why is the oxidation number of sulphur in HS03 +4 and not +5?
Original post by skrrrrrr
Nevermind! Just realised that HS03 is an anion with a -1 charge. Whoops.


Are you in year 12 or 13?
Reply 3
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skrrrrrr
OP
9
year 13 I am
Original post by Mixedraceguy
Are you in year 12 or 13?
Original post by skrrrrrr
year 13 I am


What's year 13 chemistry like compared to year 12?
Reply 5
Avatar for skrrrrrr
skrrrrrr
OP
9
Its not that bad. Everyone always said its horrible to me when I was in year 12 but then you get through the year waiting for some hard ass complicated topic but it never comes.

My advice is to consistently use PHysics Maths Tutor throughout the year and you will be fine.
Looking back, I wish my school had done transition metals first and then theoretical topics later, as its SO heavily based on fact recall.

Original post by Mixedraceguy
What's year 13 chemistry like compared to year 12?
Original post by skrrrrrr
Its not that bad. Everyone always said its horrible to me when I was in year 12 but then you get through the year waiting for some hard ass complicated topic but it never comes.

My advice is to consistently use PHysics Maths Tutor throughout the year and you will be fine.
Looking back, I wish my school had done transition metals first and then theoretical topics later, as its SO heavily based on fact recall.


Yeah I need to checkout physics maths tutor are you aqa?
So far I've found equilibrium and redox reactions difficult but I've got my head round them are transition metals in A2? Are you gonna do chemistry at uni?

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