ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: ElHadiio on March 16, 2011, 09:38:04 pm

Title: quick question..
Post by: ElHadiio on March 16, 2011, 09:38:04 pm

can someone please help me with my prac
our pracs about volumetric analysis
and the question is
Why is solid iodine not considered to be a good primary standard?

Title: Re: quick question..
Post by: pi on March 16, 2011, 09:41:58 pm

1. Its toxic (as it is pure)  <-- although this is not essential
2. Relatively low molar mass (compared to more common standards)
3. Not soluble (I think it sublimes, not sure though)


Can't think of anything else...

Title: Re: quick question..
Post by: ElHadiio on March 16, 2011, 09:44:02 pm

thank you :D
can anyone verify this for me

Title: Re: quick question..
Post by: ElHadiio on March 16, 2011, 10:08:59 pm

oh also
what is the purpose of the little packets of desicant in Vitamin C bottles?...

Title: Re: quick question..
Post by: ElHadiio on March 16, 2011, 11:39:53 pm

thank you very much pi and anyone else who spent time thinking of the answer or tried to help
its cool i got it :)


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