Question
A constant volume gas thermometer using helium records a pressure of 20.0 KPa at the triple point of water and pressure of 14.3 KPa at temperature of dry ice (solid CO2). What is the temperature of dry ice?
Solution
We know that pressure is directly proportional to the temperature on absolute scale.
Temperature of triple point of water,
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Let T be the temperature of dry ice on Kelvin scale.
So, we have
, is the temperature of the dry ice.
