Re: Quantitative Analysis of CaO in the mixture
- From: "Farooq W" <farooq.w@xxxxxxxxx>
- Date: 28 Jan 2006 21:01:32 -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?
Perhaps no.
>
> I think that only CaO react with water and then convert into Ca(OH)2.
Which is still insoluble in water and difficult to separate from the
mixture.
>
> 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.
Thermogravimetry should help you help you here, if it is available. Run
TGs of pure CaTiO3, CaCO3 and CaO and then your sample. The data
obtained is sufficient to calculate the percentage of CaO.
Since you have a three component mixture, you need to have at least
three sets of independent measurments (3 equations for three unknowns)
for determining CaO. I do not know the properties of CaTiO3 (solubility
in water, acids etc.), but what you can do it first is to measure the
Ti content of your mixture ( 1 mol Ti = 1 mol CaTiO3), then acidify a
new portion of the sample and measure CO2 evolved ( 1 mol CO2 = 1 mol
CaCO3). Convert this data into percentage, then % CaO = 100 - % CaTiO3
- % CaCO3. Unfortunately this looks rather impractical.
.
- References:
- Quantitative Analysis of CaO in the mixture
- From: lms7832
- Quantitative Analysis of CaO in the mixture
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