Which gas is easily liquefied?

The permanent gases have weak intermolecular forces of interaction which makes the process of liquefaction impossible to carry out. Since the options have hydrogen, oxygen and nitrogen, it is clear that they are permanent gases. Only chlorine can be liquified easily by applying the suitable pressure on it.

How does soil liquefaction occur?

Liquefaction takes place when loosely packed, water-logged sediments at or near the ground surface lose their strength in response to strong ground shaking. Liquefaction occurring beneath buildings and other structures can cause major damage during earthquakes.

What do you mean by liquefaction of gas?

Liquefaction of gases is physical conversion of a gas into a liquid state (condensation). The liquefaction of gases is a complicated process that uses various compressions and expansions to achieve high pressures and very low temperatures, using, for example, turboexpanders.

How does applying pressure help in liquefaction of gas?

Pressure brings close to molecules of a gas that are far apart from each other. When more and more pressure is applied on gas molecules they come closer to each other so inter molecular forces start producing between gas molecules. This factor helps in liquefaction of gases.

Which gas will liquefy first?

ammonia

How gases are liquefied?

In general, gases can be liquefied by one of three methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, which causes the gas to lose energy and change to the liquid state; and (3) by making gas do work against its …

Which gas is most difficult to liquefy and why?

Helium

Which gas liquefies at lowest temperature?

co2

Which gas has highest temperature?

Solution : The gas which can be liquefied most easily has the highest critical temperature. Water vapours i.e., H2O(g) molecules can be liquefied most easily due to presence of intermolecular hydrogen bonding. Therefore, they have maximum critical temperature .

What are liquefiable gases?

Liquefaction is useful when one gas is easily liquefiable. Liquefaction of gases is the process by which a gas is converted to a liquid by applying high pressure and low temperature. For example, oxygen normally occurs as a gas.

Which is suitable for liquefaction of gases?

Since the combination of high pressure and low temperature make the gas molecules to come closer and to have a low kinetic energy, it leads the gas to become liquid. So, option B is the best suitable condition for liquefaction of gases.

How do we liquefy the gases very short answer?

When enough pressure is applied, the gases are highly compressed into a small volume. The particles of gases get so close together that they start attracting one another sufficiently to form a liquid. Therefore, Gases can be liquefied by applying high pressure and low temperature.

How can we liquefy a gas Class 9?

Answer: In order to liquefy a gas, the constituent particles or molecules have to be brought closer. The atmospheric gases can be liquefied either by increasing pressure or by decreasing temperature.

What is Joule coefficient?

From the first law of thermodynamics, such a process is isenthalpic and one can usefully define a Joule-Thomson coefficient as: as a measure of the change in temperature which results from a drop in pressure across the constriction.

What do you mean by Joule Thomson coefficient?

From the first law of thermodynamics, such a process is isenthalpic and one can usefully define a Joule-Thomson coefficient as: as a measure of the change in temperature which results from a drop in pressure across the constriction. For hydrogen and helium, it is negative and the temperature increases.

How do you calculate Joule Thomson effect?

The Joule-Thomson equation is μ = (T1 – T2) / (P1 – P2) where μ is the Joule-Thomson coefficient, T1 is the initial temperature, T2 is the final temperature, P1 is the initial pressure and P2 is the final pressure.

What is the basic principle of Joule Thomson effect?

The basic principle of Joule Thomson effect is based on the transfer of heat. Also, at ordinary temperature and pressure, all real gases undergo expansion and this phenomenon is used in the process of liquefying gases.

What do you mean by Thomson effect?

Thomson effect, the evolution or absorption of heat when electric current passes through a circuit composed of a single material that has a temperature difference along its length.

What is the value of Joule Thomson coefficient for ideal gas?

The temperature drop of a gas divided by its pressure drop under constant enthalpy conditions is called the Joule-Thomson coefficient (JTC) of the gas. The JTC of an ideal gas is equal to zero since its enthalpy depends on only temperature.

In which temperature the Joule-Thomson effect is zero?

Derivation of the Joule–Thomson coefficient is zero, occurs when the coefficient of thermal expansion is equal to the inverse of the temperature. Since this is true at all temperatures for ideal gases (see expansion in gases), the Joule–Thomson coefficient of an ideal gas is zero at all temperatures.

What is a throttling process?

Throttling is a process where a high-pressure fluid is converted into low-pressure by using a throttle valve. In a throttling process, the enthalpy remains constant and the work done is zero.

Is throttling isothermal?

Throttling of an ideal gas is both isenthalpic and isothermal. Throttling of an ideal gas is both isenthalpic and isothermal.

What is the function of throttling device?

A throttling device acts to restrict the flow of refrigerant at a point between the condenser unit and the evaporator. The refrigerant coming out of the condenser is characterized by the fact that it is in a state of high pressure, yet only medium temperature.

Does throttling reduce temperature?

In the throttling process the down stream pressure is always less than the upstream pressure . Therefore, whenever a real gas is subjected to throttling, the temperature of the gas decreases if the initial state lies in the region to the left of the isenthalpic curve.

Does throttling reduce pressure?

A throttling valve restricts the cross sectional area through which the fluid flows increasing supply or upstream pressure and reducing flow resulting in a decrease in pressure and flow on the unrestricted or down stream branch of the system.