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प्रश्न
Answer the following question based on the P-T phase diagram of carbon dioxide:
What are the critical temperature and pressure for CO2? What is their significance?
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उत्तर
The critical temperature and critical pressure of CO2 are 31.1°C and 73 atm respectively. Even if it is compressed to a pressure greater than 73 atm, CO2 will not liquefy above the critical temperature.
संबंधित प्रश्न
A copper block of mass 2.5 kg is heated in a furnace to a temperature of 500 °C and then placed on a large ice block. What is the maximum amount of ice that can melt? (Specific heat of copper = 0.39 J g–1 K–1; heat of fusion of water = 335 J g–1).
Answer the following questions based on the P–T phase diagram of CO2:
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Answer the following questions based on the P–T phase diagram of CO2:
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Answer the following questions based on the P–T phase diagram of CO2:
Describe qualitatively the changes in a given mass of solid CO2 at 10 atm pressure and temperature –65 °C as it is heated up to room temperature at constant pressure.
Answer the following questions based on the P–T phase diagram of CO2:
Describe qualitatively the changes in a given mass of solid CO2 at 10 atm pressure and temperature –65 °C as it is heated up to room temperature at constant pressure.
Answer the following questions based on the P–T phase diagram of CO2:
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Mark the correct options:
- A system X is in thermal equilibrium with Y but not with Z. System Y and Z may be in thermal equilibrium with each other.
- A system X is in thermal equilibrium with Y but not with Z. Systems Y and Z are not in thermal equilibrium with each other.
- A system X is neither in thermal equilibrium with Y nor with Z. The systems Y and Z must be in thermal equilibrium with each other.
- A system X is neither in thermal equilibrium with Y nor with Z. The system Y and Z may be in thermal equilibrium with each other.
Relation between heat Q, mass mmm, and specific latent heat L ______.
What happens to temperature at 0°C during melting of ice?
Why does water stay at 100°C while boiling?
Effect of increasing external pressure on boiling point ______.
The heating curve below shows temperature vs. heat added for ice, water and steam at 1 atm ______.
For 1 kg of water, which phase change requires more energy?
