Predict whether 1,3-dimethylcyclohexane would have a higher or a lower vapor

label Chemistry
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Predict whether 1,3-dimethylcyclohexane would have a higher or a lower vapor pressure than water.  How do I look at this and make a prediction without completing the math?

Aug 23rd, 2015

Hi there! Thank you for the opportunity to help you with your question!

A vapor pressure is another measure of a substance's evaporation rate. The high vapor pressure means high evaporation rate, and low vapor pressure means low evaporation rate.

Now, we are comparing 1,3-dimethylcyclohexane, which is a hydrocarbon (made up of carbon and hydrogen only), and water, which has hydrogen and oxygen. The main difference between these two are the intermolecular forces; water has hydrogen bonds, and hydrogen bonds are very strong, whereas dimethycyclohexane only has Van der Waals' forces, which are relatively weak.

Therefore, what we are comparing is which one of these is easiest to evaporate. Because water has a stronger bonding, then it is much harder to get water to evaporate. Dimethylcyclohexane would evaporate much easier, so we can conclude that it would have a higher vapor pressure than water.

Hope this helps!

Please let me know if you need any clarification. Always glad to help!
Aug 23rd, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Aug 23rd, 2015
...
Aug 23rd, 2015
Sep 23rd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer