AP EAMCET · Chemistry · s Block Elements
The correct order of decomposition temperature of \(\mathrm{MgCO}_3\) \((\mathrm{X}) . \mathrm{BaCO}_3(\mathrm{Y}), \mathrm{CaCO}_3(\mathrm{Z})\) is
- A \(\mathrm{Y} \gt \mathrm{Z} \gt \mathrm{X}\)
- B \(X \gt Y \gt Z\)
- C \(Y \gt X \gt Z\)
- D \(X \gt Z \gt Y\)
Answer & Solution
Correct Answer
(A) \(\mathrm{Y} \gt \mathrm{Z} \gt \mathrm{X}\)
Step-by-step Solution
Detailed explanation
Thermal stability increases with increasing cationic size. So, correct order is \(\mathrm{BaCO}_3 \gt \mathrm{CaCO}_3 \gt \mathrm{MgCO}_3\)
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