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Which of the following is the thermodynamically most stable allotrope of carbon?
- a)Graphite
- b)Diamond
- c)Fullerene
- d)Carbon-black
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following is the thermodynamically most stable allotrope...
The correct answer is Graphite.
- Change in enthalpy of carbon in diamond to graphite form is negative.
- It shows that graphite should be more stable than diamond.
- The melting point of graphite is more than diamond which implies that it is a thermodynamically most stable allotrope of carbon.
Key-Points
- Graphite, also called plumbago or black lead, a mineral consisting of carbon.
- Graphite has a layered structure that consists of rings of six carbon atoms arranged in widely spaced horizontal sheets.
- It is used in pencils, lubricants, electrodes, and as a moderator that slows down neutrons in nuclear reactors.
- Graphite is a good conductor of heat and electricity.
Additional Information
- Diamonds are the hardest natural substance known to man.
- The only substance that can scratch a diamond is another diamond.
- Diamond is the only gem made of a single element.
- It is typically about 99.95% carbon.
- Fullerene is an allotrope of carbon whose molecule consists of carbon atoms.
- It is connected by single and double bonds so as to form a closed or partially closed mesh, with fused rings of five to seven atoms.
- It can be used as a radical scavenger and antioxidant.
- Carbon-black is produced by partial burning and pyrolysis of low-value oil residues at high temperatures under controlled process conditions.
- It is used to strengthen rubber in tires, but can also act as a pigment, UV stabilizer, and coating applications.
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Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer?
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Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer?.
Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is the thermodynamically most stable allotrope of carbon?a)Graphiteb)Diamondc)Fullerened)Carbon-blackCorrect answer is option 'A'. Can you explain this answer?.
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