Q12 / 160 · TS EAMCET 2024 (09 May Shift 2) · Chemistry

Identify the compound which gives $\mathrm{CO}_2$ more readily on heating

  • A
    $\mathrm{CaCO}_3$
  • B
    $\mathrm{Na}_2 \mathrm{CO}_3$
  • C
    $\mathrm{NaHCO}_3$
  • Correct answer
    D
    $\mathrm{Li}_2 \mathrm{CO}_3$

Solution

Lithium carbonate is not so stable so it will decomposed more readily on heating. Lithium being very small in size polarises a larger $\mathrm{CO}_3^{-2}$ ion leading to the formation of more stable $\mathrm{Li}_2 \mathrm{O}$ and $\mathrm{CO}_2$.

Hence, the correct answer is option: 'D'.

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