On heating,which of the following releases CO | vedclass

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(B) The thermal stability of alkaline earth metal carbonates increases down the group,while alkali metal carbonates are generally more stable than alk

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$MgCO_3$

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(B) The thermal stability of alkaline earth metal carbonates increases down the group,while alkali metal carbonates are generally more stable than alkaline earth metal carbonates.The order of thermal stability is: $K_2CO_3 > Na_2CO_3 > CaCO_3 > MgCO_3$.Since $MgCO_3$ has the lowest thermal stability,it decomposes most easily upon heating to release $CO_2$ gas.The reaction is: $MgCO_3 \stackrel{\Delta}{\longrightarrow} MgO + CO_2$.

On heating,which of the following releases $CO_2$ most easily?

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