हिंदी

Consider a sample of a gas in a cylinder with a movable piston. Show diagrammatically the changes in the position of the piston, if temperature is decreased from 300 K to 150 K at constant pressure

Advertisements
Advertisements

प्रश्न

Consider a sample of a gas in a cylinder with a movable piston.

Show diagrammatically the changes in the position of the piston, if the temperature is decreased from 300 K to 150 K at constant pressure.

आकृति
Advertisements

उत्तर

At constant P, V ∝ T

Since the temperature becomes half, the volume will also become half.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 10: States of Matter - Exercises [पृष्ठ १५८]

APPEARS IN

बालभारती Chemistry [English] Standard 11 Maharashtra State Board
अध्याय 10 States of Matter
Exercises | Q 3. (B)(b) | पृष्ठ १५८

संबंधित प्रश्न

State (i) the three variables for gas laws and (ii) SI units of these variables.


Give reason for the following:

Gases exert pressure in all directions.


What is meant by aqueous tension? How is the pressure exerted by a gas corrected to account for aqueous tension?


State the following:

The absolute temperature of a gas at 7°C


Answer in one sentence.

A bubble of methane gas rises from the bottom of the North sea. What will happen to the size of the bubble as it rises to the surface?


Convert the following pressure value into Pascals.

107000 Nm−2


Convert 101.325 kPa to bar.


Identify the gas laws from the following diagram.

Diagram Gas laws
______________

Identify the gas laws from the following diagram.

Diagram Gas laws
______________

Consider a sample of a gas in a cylinder with a movable piston.

Show diagrammatically the changes in the position of the piston, if pressure is increased from 1.0 bar to 2.0 bar at a constant temperature.


Write the statement for Charles’ law


Solve the following.

A balloon is inflated with helium gas at room temperature of 25°C and at 1 bar pressure when its initial volume is 2.27L and allowed to rise in the air. As it rises in the air external pressure decreases and the volume of the gas increases till finally, it bursts when external pressure is 0.3bar. What is the limit at which the volume of the balloon can stay inflated?


Solve the following.

The volume of a given mass of a gas at 0°C is 2 dm3. Calculate the new volume of the gas at constant pressure when the temperature is increased by 10°C.


Solve the following.

A hot air balloon has a volume of 2800 m3 at 99°C. What is the volume if the air cools to 80°C?


The temperatures at which real gases obey the ideal gas laws over a wide range of pressure is called __________.


Assertion: Critical temperature of CO2 is 304 K, it can be liquefied above 304 K.

Reason: For a given mass of gas, volume is to directly proportional to pressure at constant temperature


Explain the following observation.

The size of a weather balloon becomes larger and larger as it ascends up to larger altitude


Sulphur hexafluoride is a colourless, odourless gas; calculate the pressure exerted by 1.82 moles of the gas in a steel vessel of volume 5.43 dm3 at 69.5 °C, assuming ideal gas behaviour


A small bubble rises from the bottom of a lake where the temperature and pressure are 6°C and 4 atm. to the water surface, where the temperature is 25°C and pressure is 1 atm. Calculate the final volume in (mL) of the bubble, if its initial volume is 1.5 mL.


For a given mass of an ideal gas, which of the following statements is CORRECT?


A certain sample of gas has a volume of 0.2 L at one atmosphere pressure and 273.15 K. What is the volume of gas at 273.15°C at same pressure?


At what temperature the volume of a gas becomes absolutely zero?


10 g of gas at one atomospheric pressure is cooled from 273.15°C to 0°C keeping the volume constant. What is the final pressure?


At what temperature, the volume of gas would become zero?


The number of molecules in 8.96 litres of gas at 0°C and 1 atm. pressure is approximately ______.


Identify the correct relationship between pressure (P), density (d), molar mass (M) and Temperature (T) for an ideal gas from the following.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×