Asked by Cheryllyn
What is the thermal stability of potassium phosphate and why?
Thanks.
I assume you mean as a powder, not as an water solution. Potassium phosphate is deliquescent.
At elevated temperatures, phosphorus oxides are released as the compound decomposes.
How elevated? I want to prepare a sample of pure, dry potassium phosphate in my school's lab so I plan to crystallise it then place it in an oven. Will anything happen when I heat it over a bunsen flame during crystallisation?
If you want to prepare a pure sample of tribasic potassium phosphate, The Merck Index gives two references (both in German).
Janecke, Z. Physik. Chem. <b>2127,</b>75 (1927) OR
Simon, Shultz, Z. Anorg. Allgem. Chem. <b>242, </b>331 (1939).
Thanks.
I assume you mean as a powder, not as an water solution. Potassium phosphate is deliquescent.
At elevated temperatures, phosphorus oxides are released as the compound decomposes.
How elevated? I want to prepare a sample of pure, dry potassium phosphate in my school's lab so I plan to crystallise it then place it in an oven. Will anything happen when I heat it over a bunsen flame during crystallisation?
If you want to prepare a pure sample of tribasic potassium phosphate, The Merck Index gives two references (both in German).
Janecke, Z. Physik. Chem. <b>2127,</b>75 (1927) OR
Simon, Shultz, Z. Anorg. Allgem. Chem. <b>242, </b>331 (1939).
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