Chlorine boils at 239K. What is the boiling point of chlorine expressed in degrees Celsius? Chemistry Chlorine boils at 239K. What is the boiling point of chlorine expressed in degrees Celsius? a. -34°C b. -61°C c. 93°C d. 34°C Answer: -34°C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+