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Metal carbonates decompose on heating to...

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

A

`MgCO_(3)`

B

`CaCO_(3)`

C

`SrCO_(3)`

D

`BaCO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
Thermal stability of metal carbonates increases as the electropositive character of the metal or the basicity of the metal hydroxide increases from `Be(OH)_(2)` to `Ba(OH)_(2)` . Thus `BaCO_(3)` is most stable .
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Knowledge Check

  • Which of the metals has most stable carbonate

    A
    Na
    B
    Mg
    C
    Al
    D
    Si

  • Which of the metal carbonates is decomposed on heating ?

    A
    `MgCO_(3)`
    B
    `Na_(2)CO_(3)`
    C
    `K_(2)CO_(3)`
    D
    `Rb_(2)CO_(3)`

  • Metal oxides which decomposes on heating is

    A
    `SnO`
    B
    `Al_(2)O_(3)`
    C
    `CuO`
    D
    `HgO`

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