Question

Substances like krypton, which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. At a pressure of 1 atm, does not condense to a liquid until –153.2°C and does not freeze until –157.1°C. What are the equivalent absolute temperatures?

Answer 1

Answer:

The boiling and freezing temperatures of krypton at absolute scale are 119.95 K and 116.05 K, respectively.

Explanation:

The absolute temperature on SI units corresponds to Kelvin scale, whose conversion formula in terms of the Celsius scale is:

$T_{K} = T_{C} + 273.15$

Where:

$T_{K}$ - Absolute temperature, measured in Kelvins.

$T_{C}$ - Relative temperature, measured in Celsius.

Finally, freezing and boiling temperatures are converted into absolute scale:

Boiling temperature

$T_{K} = (-153.2 + 273.15)\,K$

$T_{K} = 119.95\,K$

Freezing temperature

$T_{K} = (-157.1 + 273.15)\,K$

$T_{K} = 116.05\,K$

The boiling and freezing temperatures of krypton at absolute scale are 119.95 K and 116.05 K, respectively.