Question:
Which of the following metal carbonate decomposes on heating to evolve CO\(_2\) gas?
Which of the following metal carbonate decomposes on heating to evolve CO\(_2\) gas?
Show Hint
Lithium shows anomalous behavior among alkali metals due to its small ionic size.
Updated On: Feb 11, 2026
- Li\(_2\)CO\(_3\)
- Cs\(_2\)CO\(_3\)
- K\(_2\)CO\(_3\)
- Na\(_2\)CO\(_3\)
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Recall the stability trend of alkali metal carbonates.
Thermal stability of carbonates increases down the group.
Step 2: Analyze lithium carbonate.
Lithium carbonate is unstable due to the small size and high polarizing power of \( \mathrm{Li^+} \).
Step 3: Write the decomposition reaction.
\[ \mathrm{Li_2CO_3 \xrightarrow{\Delta} Li_2O + CO_2} \]
Step 4: Conclusion.
Only lithium carbonate decomposes on heating to release CO\(_2\).
Thermal stability of carbonates increases down the group.
Step 2: Analyze lithium carbonate.
Lithium carbonate is unstable due to the small size and high polarizing power of \( \mathrm{Li^+} \).
Step 3: Write the decomposition reaction.
\[ \mathrm{Li_2CO_3 \xrightarrow{\Delta} Li_2O + CO_2} \]
Step 4: Conclusion.
Only lithium carbonate decomposes on heating to release CO\(_2\).
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET States of matter Questions
- What is the density of water vapour at boiling point of water?
Calculate final volume of a gas when pressure of 60 mL gas is increased from 1 to 1.5 atm, keeping temperature constant
- How many lattice points are there in a Body-Centered Cubic (BCC) structure?
- What is the molar mass of a gas, if 2.5 g of the gas occupies 1.12 L at STP?
- What is the volume occupied by 2 moles of an ideal gas at standard temperature and pressure (STP)?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions