Discussion
Which material has the lowest specific heat capacity at room temperature?
Answer: B
The lowest specific heat capacity belongs to Mercury.
Approximate specific heats at room temperature, per unit mass:
- water: about 4.18 J/(g K)
- copper: about 0.385 J/(g K)
- silver: about 0.235 J/(g K)
- mercury: about 0.14 J/(g K)
The molar heat capacity of metals is roughly the same (the Dulong-Petit value, about 25 J/(mol K)), so on a per-gram basis the heaviest atoms have the lowest specific heat. Mercury, with an atomic mass of about 201, comes out lowest; silver (108) and copper (64) are higher. Water, with its hydrogen bonding, has one of the highest specific heats of any common substance.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development