Why temperature less than zero is not possible?

Why temperature less than zero is not possible?

Since mean square velocity is directly proportional to temperature. If temperature is zero then mean square velocity is zero and since K. E. of molecules cannot be negative and hence temperature less than absolute zone is not possible.

Why is the temperature absolute zero theoretically unobtainable Your answer should relate to what happens to the molecules of a gas as it gets colder?

To cool something down, its heat must be transferred to something cooler than it. Since nothing can be cooler than absolute zero, one cannot cool something to absolute zero.

Why is 0K not possible?

Nothing can reach absolute zero because Energy is linked to Mass, in the sense that if there is no energy, there is no mass. It would disappear. That can’t happen due to other laws, so 0K can’t be reached.

What is the reason behind the fact that the absolute zero entropy value is not attainable?

The postulate that the entropy be finite at any temperature implies that the pressure- and θ-dependent heat capacity becomes zero at absolute zero. That is, at absolute zero, the heat capacity vanishes whatever the values of P and θ.

Why is temperature Not possible?

An object’s temperature is a measure of how much its atoms move — the colder an object is, the slower the atoms are. At the physically impossible-to-reach temperature of zero kelvin, or minus 459.67 degrees Fahrenheit (minus 273.15 degrees Celsius), atoms would stop moving.

What temperature is not possible?

Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There’s a catch, though: absolute zero is impossible to reach.

Why can’t gases have absolute zero temperature?

At absolute zero, the coldest possible temperature, particles have a minimum of kinetic energy, and therefore the lowest possible speed. (They cannot have a kinetic energy of zero and actually be stationary because of something called degeneracy pressure.)

What happens to matter when it reaches absolute zero?

Now the zero in absolute zero makes sense: Absolute zero is the temperature at which the particles in a substance are essentially motionless. There’s no way to slow them down further, so there can be no lower temperature.

Which of the following temperatures is not possible?

At the physically impossible-to-reach temperature of zero kelvin, or minus 459.67 degrees Fahrenheit (minus 273.15 degrees Celsius), atoms would stop moving. As such, nothing can be colder than absolute zero on the Kelvin scale.

Which temperature is theoretically not possible?

…zero as its temperature approaches absolute zero (−273.15 °C, or −459.67 °F).

Why the temperature of absolute zero is physically unattainable?

After more than 100 years of debate featuring the likes of Einstein himself, physicists have finally offered up mathematical proof of the third law of thermodynamics, which states that a temperature of absolute zero cannot be physically achieved because it’s impossible for the entropy (or disorder) of a system to hit …

What is principle of increase of entropy?

The principle of increase of entropy is that entropy always increases and remains constant only in a reversible process. The entropy of the universe increases in all-natural processes. Entropy is a measure of disorder in the system.

Which is the lowest limit on the temperature scale?

Absolute zero, or 0 degrees Kelvin, is the temperature where all motion stops. It’s the lowest limit on the temperature scale, but recent news articles have heralded a dip below that limit in a physics lab.

What does absolute zero mean on the temperature scale?

Absolute zero denotes the temperature at which the particles of a substance no longer have any kinetic energy, i.e. are completely at rest! Absolute zero is at -273.15 °C on the Celsius scale and -459.67 °F on the Fahrenheit scale!

Why is zero kelvin the lowest possible temperature?

If you’re concerned about why zero Kelvin is the lowest possible temperature (a.k.a. absolute zero), it’s simply because scientists have decided to make the Kelvin scale an absolute temperature scale – that means the lowest possible temperature, by definition, is zero Kelvin.

Why are Celsius and Fahrenheit scales not scientific?

The Celsius scale and also the Fahrenheit scale are not very scientific due to the arbitrary determination of the reference points. Rather, a thermodynamical temperature scale should take into account the fact that temperature is a measure of particle motion.

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