10 Questions
What is the role of ammonium salts in the formation of magnesium carbonate?
They prevent the formation of magnesium carbonate by shifting the equilibrium towards the formation of hydrogen carbonate ions
What is the precipitate formed when magnesium ions react with aqueous ammonia?
White gelatinous magnesium hydroxide
What is the purpose of removing ammonium ions from the mixture before testing for Na+, K+, and Mg2+?
To prevent interference with the precipitation of magnesium carbonate
What is the compound formed when magnesium ions react with sodium carbonate in the absence of ammonium salts?
Basic magnesium carbonate
What is the characteristic precipitate formed when magnesium ions react with sodium monohydrogen phosphate (disodium hydrogen phosphate) in an ammonia-ammonium chloride buffer?
White crystalline magnesium ammonium phosphate
What is the reaction that occurs when magnesium ions react with sodium monohydrogen phosphate in a neutral solution?
Mg2+ + Na2HPO4 → MgHPO4 (s)
What is the formula of the compound formed when magnesium ions react with sodium hydroxide?
Mg(OH)2
What is the test used to detect magnesium ions?
Magneson I test
What is the compound formed when magnesium ions react with sodium monohydrogen phosphate in a strongly alkaline solution?
Mg3(PO4)2
What is the effect of ammonium salts on the formation of magnesium phosphate?
They enhance the formation of magnesium phosphate
Test your knowledge of the chemistry of magnesium and potassium, including their reactions, ions, and properties. This quiz covers the formation of a blue precipitate in alkaline solution and the characteristics of potassium salts.
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