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  • Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?
(i) MgCO_{3}
(ii) CaCO_3
(iii) SrCO_3
(iv) BaCO_3

Answers (1)

The answer is the option (iv) MCO_{3}\rightarrow MO+CO_{2}

 

Thermal stability of MCO_{3} depends on the stability of MO. If MO is stable MCO_{3} is unstable and vice versa

BaO is least stable making BaCO_{3} most stable.

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infoexpert24

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