Calculations for Enthalpy of Vaporization

[@BChew-ku9he]

Thank you 1,000 times over.. this video was posted a while ago, but just know you still helped someone in 2021 who was ready to give up on this subject!!! Thank you so much!

[@madikobekotsedi1163]

thank you for this video. You have made it so simple to calculate the enthalpy of vaporization. Greetings all the way in South Africa

[@sebaalturkmani1404]

you are such an amazing teacher, Thank you very much lifesaver.

[@sevillaortegareginaalondra936]

Thank you so much! You have helped me with my homework. Greetings from Mexico.

[@LightYearProductions]

OMG life you are a lifesaver for me tonight thank you for the excel explanations.

[@michaelawhibley5449]

Thank you so much, you deserve the heaven

[@aishaliane]

How did the K cancel from 8.314 at 15:55 min into the video?

[@ycpChemistryLabs]

Actually, that is a (1/K) that is cancelled. It is cancelled because the slope has units of (K) - this might be a bit tough to see, but it is the case. So, when we multiply the "R" value from the denominator on the right to the left side of the equation, the (1/K) units from it cancel with the (K) units from the slope. I hope that helps!

[@joshuaguting7952]

You the real MVP.

[@sibusisomgidi9684]

WHICH TEMPERATURE WE USE WHEN WE CALCULATINING THE NUMBER OF MOLES OF AIR

[@marianasalazar1356]

the lower temperature that you got, that way you know there is the least quantity of water vapor present, I know is one year later but hopefully someone has the same question

[@jfjfjdfgre]

Very thorough. Thanks teach!

[@finback2005]

Great vid. Very helpful. Thanks

[@Omer-tx3zx]

Why P(air) equals to 0,995?

[@charlesos2499]

Since all the volumes given are raw data, aren't we to first calculate the corrected volume?

[@ycpChemistryLabs]

We don't correct for the volume, but rather we account for the portion of the pressure inside the gas bubble that comes from air. Each gas ('air' and water vapor) gets to fill the entire volume of the bubble, thus eliminating the pressure coming form the air is the way to identify the vapor pressure of water at each temperature.

[@premedmelody]

Thanks so much!!

[@dyslexichank4881]

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