Question

12. Define absolute zero and absolute scale of temperature. Write the relationship between °C and K. ​

Answer 1

Answer:

The temperature of -273°C is called absolute zero. The temperature scale with its zero at -273°C and each degree equal to one degree on the Celsius scale is called Kelvin or the absolute scale of temperature. The value on the Celsius scale can be converted to the Kelvin scale by adding 273 to it.

Explanation:

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Answer 2

Answer:

A temperature of -273.15°C at which a thermodynamic system has the lowest energy is called the absolute zero temperature. Any thermometric scale on which a reading of zero coincides with the theoretical absolute zero of temperature is called the absolute scale of temperature. The relationship between °C and K is as follows:

K = °C + 273.15

Explanation:

Absolute zero corresponds to −273.15 °C on the Celsius temperature scale and to −459.67 °F on the Fahrenheit temperature scale. It is the temperature at which a cooled ideal gas has minimum enthalpy and entropy. It is the thermodynamic equilibrium state of minimum energy. Degree celsius can be converted to Fahrenheit by adding 273.15 to degree celsius value.