The thermal stability of alkaline earth metal carbonates- MgCO 3- CaCO 3- SrCO 3 and BaCO 3- follows the order-A- CaCO 3- SrCO 3- BaCO 3- MgCO 3B- BaCO 3- SrCO 3- CaCO 3- MgCO 3C- MgCO 3- CaCO 3- SrCO 3- BaCO 3D- SrCO 3- CaCO 3- MgCO 3- BaCO 3

The correct option is B BaCO_3 gt; SrCO_3 gt; CaCO_3 gt; MgCO_3MCO_3 MO+CO_2 On moving down the group, the nbsp;thermal stability increases due to ...

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Standard XII

Chemistry

Ionic Radii and Ionisation Enthalpy (Group 2)

The thermal s...

Question

The thermal stability of alkaline earth metal carbonates– $M g C O_{3}, C a C O_{3}, S r C O_{3}$ and $B a C O_{3}$ , follows the order:

B a C O_{3} > S r C O_{3} > C a C O_{3} > M g C O_{3}

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C a C O_{3} > S r C O_{3} > B a C O_{3} > M g C O_{3}

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M g C O_{3} > C a C O_{3} > S r C O_{3} > B a C O_{3}

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S r C O_{3} > C a C O_{3} > M g C O_{3} > B a C O_{3}

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Solution

The correct option is A $B a C O_{3} > S r C O_{3} > C a C O_{3} > M g C O_{3}$
$M C O_{3} Δ - \to M O + C O_{2}$

On moving down the group, the thermal stability increases due to the increase in electropositive character of the alkaline earth metals. The smaller the positive ion, the higher the charge density, and greater the effect it will have on the carbonate ion. As the positive ions get larger down the group, their effect on the carbonate ions near them decreases and therefore more heat must be supplied for the carbon dioxide to leave the metal oxide.

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Similar questions

Q. The thermal stability of

B a C O_{3}, C a C O_{3}, S r C O_{3}

and

M g C O_{3}

decreases in the order

Q. The thermal stability of alkaline earth metal carbonates-

M g C O_{3}, C a C O_{3}, S r C O_{3}

and

B a C O_{3}

, follows the order:

Which one of the alkaline earth metal carbonates is thermally the most stable?

(a) MgCO₃ (b) CaCO₃ (c) SrCO₃ (d) BaCO₃

Q. Arrange the following in increasing lattice energy.

B e C O_{3}, M g C O_{3}, C a C O_{3}, S r C O_{3}, B a C O_{3}

Q. Decomposition temperature of

C a C O_{3}

(s) is approximately

900^{0} C

. Which of the following decompose below

900^{0} C

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The thermal stability of alkaline earth metal carbonates–MgCO3, CaCO3, SrCO3 and BaCO3, follows the order:

The thermal stability of alkaline earth metal carbonates– $M g C O_{3}, C a C O_{3}, S r C O_{3}$ and $B a C O_{3}$ , follows the order: