Re: Quantitative Analysis of CaO in the mixture
- From: raconte@xxxxxxxxxxx
- Date: 28 Jan 2006 09:42:17 -0800
lms7832@xxxxxxxxx wrote:
> Dear
>
> I have powders which is mixtures of CaO, CaTiO3, CaCO3..
>
> Then I'm not sure the percentage of CaO in the powder.
>
>
> Is there any easy way to find that?
>
> I think that only CaO react with water and then convert into Ca(OH)2.
>
> But other component is not react with water.
>
> By using this chemical reaction, I'd like to measure CaO content(%) in
> the powder.
>
> Does this method make sense?
>
> Please give me some advices.
>
> Thank you.
I think I'd work backwards. There may be an elemental test for Ti, and
you could react the mixture with acid to quantitate the amount of
carbonate by CO2 release. The remainder would be CaO, though it would
possibly be lost in the process.
I don't recall the CaO + water reaction as being a quantitative
reaction -- that is to say, not all of it will react rapidly with water
to produce CaOH, some will always remain as CaO.
Furthermore, you have CaOH, now what? You can't titrate the resulting
base with acid and an indicator, because you still have carbonate.
And don't call me "Dear" unless you mean it. Its not fair to toy with
people's emotions so close to Valentines.
.
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