MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistrys- Block 3.0Previous Year Questions
Which of the metal carbonates is decomposed on heating? (MP PMT 2010)
A.MgCO₃✓ Correct
B.Na₂CO₃
C.K₂CO₃
D.Rb₂CO₃
Explanation
The thermal stability of metal carbonates depends on the reactivity of metal and size of the cation. As the size of the cation decreases the thermal stability of metal carbonate decreases and get decomposed on heating. Therefore, magnesium carbonate will decompose easily on heating.
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