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# boiling point of isopropyl alcohol

Question:Does it have to do with polarity? or intermolecular forces? or what?

Answers:water>iso propyl alcohol>acetone>hexane.. both isopropyl alcohol and water has hydrogen bonding....but hydrogen bonding in isopropyl alcohol is hindered because of the the two methyl groups...so boiling point is lower than water... acetone has only dipole -dipole interaction and no hydrogen bonding...so its boiling point is lower than both water and isopropyl alcohol.... hexane is a non-polar compound so its boiling point will be less than water,iso propyl alcohol,and acetone... see this link for details about hydrogen bonding --- http://www.chemguide.co.uk/atoms/bonding/hbond.html answer mine-- http://answers.yahoo.com/question/index;_ylt=AhEyprHyfQP2yass_ZqGXczsy6IX;_ylv=3?qid=20091219030515AAxhNaD

Question:I need help with this lab write up Im not quite sure how to start this out and also any ideas for the procedure.. P.s. we have to measure the temperature in Celsius every 30 seconds for both substances

Answers:A hypothesis is an educated guess. Isopropyl alcohol boils at a lower lower temp

Question:

Answers:Melting point -89 C (185 K) Boiling point 82.3 C (355 K) The above assumes that the alcohol being used is 100 % pure. Actually, it is not easy to purchase 100 % isopropyl alcohol because what's available in the drugstore contains water that must be factored into the calculation .

Question:What is the evaporation rate of water, ethanol, isopropyl alcohol, and acetone? I need to know the order in which they evaporate.

Answers:gotta look at their boiling points, water = 100c , ethanol 78.4c, isopropyl alcohol = 82.3c, and acetone = 56.53c so from this you can judge that the order is acetone, ethanol, isopropyl alcohol, water