Question:
Thermodynamically, in which form of carbon is the most stable?
Thermodynamically, in which form of carbon is the most stable?
Show Hint
The standard enthalpy of formation of graphite is defined as zero, while diamond has a positive value, confirming its lower stability.
Updated On: Apr 16, 2026
- Coal
- Fullerenes
- Diamond
- Graphite
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept:
Different allotropes of carbon have different thermodynamic stabilities under standard conditions.
Step 2: Detailed Explanation:
Graphite is the thermodynamically most stable form of carbon at room temperature and pressure. Diamond is metastable (kinetically stable) and will eventually convert to graphite, though the process is extremely slow. Coal is a mixture of various organic compounds and carbon, not a pure form. Fullerenes are less stable than graphite.
Step 3: Final Answer:
Graphite is the most stable form, which corresponds to option (D).
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