Question

What is the value of absolute zero on the Celsius scale?

Answer 1

Hint: The value on the Celsius scale can be converted to the Kelvin scale by adding \[273\] to it. The absolute temperature scale is the Kelvin, which has the symbol with a capital K. We write temperatures in Kelvin without the degree symbol, absolute zero is $0$K.

Formula used: \[{{\text{T}}_{{\text{Kelvin}}}}{\text{ = }}{{\text{T}}_{{\text{Celsius}}}} + 273.15\]
Here, \[{{\text{T}}_{{\text{Celsius}}}}\] is said to be as Temperature in Celsius, and \[{{\text{T}}_{{\text{Kelvin}}}}\] is said to be as Temperature in Kelvin.

Complete step-by-step solution:
Absolute zero can be defined as the temperature at which the pressure becomes zero, Temperature at which a thermodynamic system has all-time low energy , it corresponds to \[ - 273.15{\text{ }}^\circ C\]. It appeared that an ideal gas at constant pressure would reach zero volume and now it is said to be as absolute zero. At absolute temperature , the pressure of anything becomes close to zero but doesn’t become zero . The temperature of \[ - 273.15{\text{ }}^\circ C\] is called absolute zero.
\[{{\text{T}}_{{\text{Kelvin}}}}{\text{ = }}{{\text{T}}_{{\text{Celsius}}}} + 273.15\]------(1)
At absolute zero, \[{{\text{T}}_{{\text{Kelvin}}}} = 0\]
Now by using the formula, let us substitute \[{{\text{T}}_{{\text{Kelvin}}}} = 0\] in equation (1)
So we get \[{\text{0 = }}{{\text{T}}_{{\text{Celsius}}}} + 273.15\]
Now, move \[273.15\] to the other side, so we get \[{{\text{T}}_{{\text{Celsius}}}} = - 273.15\]
and this is the value of absolute temperature on the Celsius scale is equal to \[ - 273.15{\text{ }}^\circ C\].
Each degree is equal to one degree on the Celsius scale is called Kelvin or the absolute scale of temperature.

Note: Value of absolute temperature on the Celsius scale is equal to \[ - 273.15{\text{ }}^\circ C\].
Absolute zero, is a Temperature at which a thermodynamic system has the lowest energy. It corresponds to \[ - 273.15{\text{ }}^\circ C\] on the Celsius temperature scale.