COMPOUNDS OF POTASSIUM
COMPOUND
PREPARATION
PROPERTIES
Potassium oxide (K2O)
2KNO3+ 10K è 6K2O + N2
2KOH + 2K è 2K2O + H2
180OC
4K + O2 è 2K2O
reduced pressure
White hygroscopic substance
K2O + H2O
è 2KOH
Potassium hydroxide (KOH)
K2SO4 + Ba(OH)2 è BaSO4 + 2KOH
By the electrolysis of a solution of […]
SODIUM
Sodium is a soft silvery reactive element belonging to the group I of the periodic table. It is characterised by
Atomic number 11
Relative atomic mass 22.9898
Relative density 0.97
Melting point 97.5OC
Boiling point 892OC
OCCURRENCE
Sodium basically occurs as NaCl in sea water, lakes and rocks. It also occurs as Chile saltpetre (NaNO2).
EXTRACTION
DOWN’S PROCESS
Sodium is mainly […]
ELECTROCHEMISTRYWhat is electrochemistry?
Electrochemistry is defined as the study of the chemical properties and reactions of substances involving ions in solution. Electrochemistry is concerned with the interconversion of electrical and chemical energies. During electrolysis, electrical energy is obtained by bringing about chemical change. In a […]
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