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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: mert_kilicoglu on June 15, 2016, 04:07:54 PM

Title: Sodium Silicate Concentration
Post by: mert_kilicoglu on June 15, 2016, 04:07:54 PM
Hello dear chemists;

For my IB Chemistry HL Internal Assessment I am planning to measure the silicate contents of various silica-cat-litters from different brands. I will first synthesize sodium silicate from the silica gels by the addition of NaOH. But after that I do not know how to measure the concentration of sodium silicate in these solutions. Any methods?

Thank you!
Title: Re: Sodium Silicate Concentration
Post by: AWK on June 15, 2016, 05:30:24 PM
Search internet for:
the determination of silicate
Title: Re: Sodium Silicate Concentration
Post by: Arkcon on June 15, 2016, 07:54:51 PM
Quote from: AWK on June 15, 2016, 05:30:24 PM
Search internet for:
the determination of silicate

Whether you use an ICP-MS or a wet chemistry test, you will have to dissolve the silicate in HF.  Not a task for a novice, and I'm sure the school won't let you.  You should quickly select something else to work with.
Title: Re: Sodium Silicate Concentration
Post by: marquis on June 16, 2016, 01:19:11 PM
Do you have any idea of the other kitty litter ingredients?

If there are all organic, you might be able to do a gravimetric analysis
by ashing the sample at high temperature (500C).

Good luck