Verified Solution • 2025–26 Session moderate

QAIPMT-2007-Ch-2294: NEET 2007 Chemistry - Class 11 AIPMT-2007-Ch-2294 Solution: The correct order of increasing thermal stability of…

The correct order of increasing thermal stability of

K_2CO_3

MgCO_3

CaCO_3

and

BeCO_3

Multiple Choice Options

A $BeCO_3<MgCO_3<CaCO_3<K_2CO_3$
B $MgCO_3<BeCO_3<CaCO_3<K_2CO_3$
C $K_2CO_3<MgCO_3<CaCO_3<BeCO_3$
D $BeCO_3<MgCO_3<K_2CO_3<CaCO_3$

Step-by-Step Verified Solution

As the basicity of metal hydroxides increases down the group from Be to Ba, the thermal stability of their carbonates also increases in the same order. Further group 1 compounds are more thermally stable than group 2 because their hydroxide are much basic than group 2 hydroxides therefore, the order of thermal stability is BeCO 3 < MgCO 3 < CaCO 3 < K 2 CO 3

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