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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: luishdg12 on October 30, 2019, 05:19:54 PM

Title: What is the best way to purify CoCO3?
Post by: luishdg12 on October 30, 2019, 05:19:54 PM
Right now I´m trying to purify CoCO3 using recrystallization but I´m having trouble finding the best solvent.
Title: Re: What is the best way to purify CoCO3?
Post by: AWK on October 30, 2019, 06:14:21 PM
There is no solvent for cobalt carbonate. You just have to use the maximum pure cobalt salt and precipitate the cobalt carbonate in a neutral environment (carbonates excluded because of precipitation basic cobalt carbonate). In this way, you may obtain CoCO3·4H2O from the aqueous solution.
Title: Re: What is the best way to purify CoCO3?
Post by: Borek on October 31, 2019, 04:24:35 AM
Technically water is a solvent.
Title: Re: What is the best way to purify CoCO3?
Post by: Covek on November 27, 2019, 03:02:13 PM
I have dissolved CoCO3 in HNO3 and precipitated with NaHCO3 in solution. I had to heat up solution to 80 C to get close to quantitative precipitate.