हिंदी

Answer the following question based on the P-T phase diagram of carbon dioxide: What is the effect of decrease of pressure on the fusion and boiling point of CO2? - Physics

Advertisements
Advertisements

प्रश्न

Answer the following question based on the P-T phase diagram of carbon dioxide:

What is the effect of decrease of pressure on the fusion and boiling point of CO2?

एक पंक्ति में उत्तर

उत्तर

The fusion and boiling points of CO2 decrease with a decrease in pressure.

shaalaa.com
Change of State - Latent Heat Capacity
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 11: Thermal Properties of Matter - Exercises [पृष्ठ २९६]

APPEARS IN

एनसीईआरटी Physics [English] Class 11
अध्याय 11 Thermal Properties of Matter
Exercises | Q 16.2 | पृष्ठ २९६

संबंधित प्रश्न

Answer the following questions based on the P–T phase diagram of CO2:

CO2 at 1 atm pressure and temperature – 60 °C is compressed isothermally. Does it go through a liquid phase?


Answer the following questions based on the P–T phase diagram of CO2:

What happens when CO2 at 4 atm pressure is cooled from 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:

CO2 is heated to a temperature 70 °C and compressed isothermally. What changes in its properties do you expect to observe?


A brass boiler has a base area of 0.15 m2 and thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boiler. The thermal conductivity of brass = 109 J s –1 m–1 K–1; Heat of vaporisation of water = 2256 × 103 J kg–1.


Explain why a body with large reflectivity is a poor emitter


A metal block of heat capacity 80 J°C−1 placed in a room at 20°C is heated electrically. The heater is switched off when the temperature reaches 30°C. The temperature of the block rises at the rate of 2°C s−1 just after the heater is switched on and falls at the rate of 0.2°C s−1 just after the heater is switched off. Assume Newton's law of cooling to hold. 

  1. Find the power of the heater. 
  2. Find the power radiated by the block just after the heater is switched off. 
  3. Find the power radiated by the block when the temperature of the block is 25°C.
  4. Assuming that the power radiated at 25°C represents the average value in the heating process, find the time for which the heater was kept on.

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?


The radii of two copper spheres are in the ratio 1 : 3 and their temperatures are in the ratio 9 : 1. The ratio of heat content in them will be: 


100 g of water is supercooled to –10°C. At this point, due to some disturbance mechanised or otherwise some of it suddenly freezes to ice. What will be the temperature of the resultant mixture and how much mass would freeze?

`[S_w = 1cal/g/^circC and L_(Fusion)^w = 80cal/g]`


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×