Homework Help

why is octane a liquid at SATP

user profile pic

lovely106 | Student, Undergraduate | (Level 2) eNoter

Posted February 8, 2013 at 3:35 AM via web

dislike 1 like

why is octane a liquid at SATP

1 Answer | Add Yours

Top Answer

user profile pic

jerichorayel | College Teacher | (Level 1) Senior Educator

Posted February 8, 2013 at 5:25 AM (Answer #1)

dislike 1 like

Octane has a general formula of C8H18 and is classified as alkanes. The phases of alkane at room temperature vary as the numbers of carbons are increase. Generally, alkane with 4 carbons or less are gas at room temperature. As the carbon number is increased, the phases change (solid - liquid - gas). 

In case of octane, it is liquid. But due to changes in temperature, it varies its phases. Sometime it becomes more viscous. To prevent that, oil companies are mixing octane with other gases to maintain the desired phase. It is maintained at liquid state because it is in the mixture of other gases.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes