Calorimetry
ฝัง
- เผยแพร่เมื่อ 31 พ.ค. 2024
- 051 - Calorimetry
In this video Paul Andersen describes the history of calorimetry and explains how it can be used to measure energy changes in a system. The specific heat of water is well established and so as a system releases or absorbs energy from a surrounding water bath it can be measured. Calorimeters can be used to measure the specific heat capacity of a substance as well as the enthalpy of fusion, vaporization, and reaction.
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Chris, Nettrom based on source by. English: SVG Version of Wikistress Thermometer on Level 1 with No Text (content Is Coloured Green, Low Value)., July 27, 2011. File:WikiStress 1 de.svg. commons.wikimedia.org/wiki/Fil....
---. English: SVG Version of Wikistress Thermometer on Level 2 with No Text (content Is Coloured Yellow, Medium Value)., July 27, 2011. File:WikiStress 2 de.svg. commons.wikimedia.org/wiki/Fil....
---. English: SVG Version of Wikistress Thermometer on Level 4 with No Text (content Is Coloured Red and Is a Boiling Point)., July 27, 2011. File:WikiStress 4 de.svg. commons.wikimedia.org/wiki/Fil....
David, Jacques-Louis. English: Antoine Lavoisier, May 19, 2005. portrait.kaar.at/Naturwissensc.... commons.wikimedia.org/wiki/Fil....
Deutsch: Eine Kerze. Gezeichnet Auf Papier Mit Einem Filzstift, Gescannt, Danach Aufbereitet Mit GIMP., 2003. originally uploaded by de:Benutzer:Drzoom. commons.wikimedia.org/wiki/Fil....
"File:Bombenkalorimeter Mit Bombe.jpg." Wikipedia, the Free Encyclopedia. Accessed December 2, 2013. en.wikipedia.org/wiki/File:Bom....
Hall, Daniel. My Friend's Two Guinea Pigs, Pablo and Darcy, July 30, 2011. Flickr: Guinea Pigs. commons.wikimedia.org/wiki/Fil....
Li-on. English: Calorimeter, October 7, 2010. Own work. commons.wikimedia.org/wiki/Fil....
User:Mattes. English: Ice Cubes for Beverages - Hollow Cylinders, Typically Used in Thailand., March 4, 2009. Own work. commons.wikimedia.org/wiki/Fil....
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Ahhhh!!! We're lucky that the Internet and people like you exist
So good! Explain the concept and the math/equations! Thank you!
For the equation you derive from q=mDTc, doesn't q represent heat in joules and c specific heat capacity? As you show, the rearrangement would be c=q/(m)(DT), but where c is finding the specific heat capacity, and q is the heat in joules. Both ways to solve the math are right, I think the variables are just mislabeled or misleading in this example, or maybe it's just the way I learned from my textbook that has changed since 2013.Any ideas?
your videos really help...thank you
LETS GO GET HYPED ITS MR ANDERSON
Very helpful for my chemistry exam tomorrow!
Thank you so much for explaining this concept so clearly. My daughter has grasped this concept in a better way because of the specificity with which you have explained this topic. Students should refer to such videos.
Excellent explanation..thank you
One slight point of attention. even though of course temperature differences on a celsius and kelvin scale are the same, you did not make that specific when you filled in the equation on both sides. (so now you see C on one side and K on the other, which of course only works for the equation which contains delta T
Thank you! Will help with my Chem quiz tomorrow ! :)
How did it go
yes that was helpful and subscribe
why can't some teachers explain things that simply !
How did you measure Specific Heat Capacity of the water ?
GREAT!!!!!!!!!!!!!!!!!!! Thanks!
Thank you so much
Nobody:
Cardi B: 4:07
LMAO
BRILLIANT!!!!!!!!
unless the specific heat of water uses degrees celsius, don't you need to convert the temperature change to kelvin to make the units match?
The units were supposed to be 4.184 J/g × °C.
Celsius and Kelvin perhaps don't equal each other, but the *change* in Celsius and the *change* in Kelvin do.
what if I need to measure the specific heat capacity instead of the heat transferred to the liquid
Every time I watch a science video I want to drop out a little bit more.
I'm learning this in my physics class for some reason
i took chem and failed it..now it makes sense!
I need to borrow your brain for my heat test tomorrow k?
How was the test?
okay
2:19
Only such a system gives an error in measurements at least 2.5 times.
See the Principle of Le Chatelier - Brown (1884)
my regret for taking chem is setting in
I think 3.34×10^5 J is the correct answer because he forgot to convert the C to K
looks like we have to keep the water inside the calorimetry clean all the time..
Ap chem Squad :)))
for some reason i still dont understand
c for water is 4.18J/g*C (not K). Helpful video besides that. (2:54)
+Milk Man Actually the units are interchangeable since there is a 1:1 ratio between the two units, i.e., a change in 1 degree Celsius is equivalent to a change in 1 Kelvin. So, c = 4.18 J/g*C OR 4.18 J/g*K
Ashley Roman I forgot about that. Thanks a lot!
+Milk Man 4.184 J/g*c(K for old used)
hopefully I survive school
Same 😕 mr Anderson comes in clutch tho
nice
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Distance Learning anyone?
yep
yawa
HAHAHAHAHAHSHAHAHAHAHSHSHAHAHAHAHAHAHAHAH HI CLASSMATE
Joyce Plaida DAMING VIDEO EH BA NAMAN HAHAHAHAHAHH
Yo why do we need to see your face.
We don't
You have 250 ml of water, not grams
same thing
Brandon Chavez boi
Hey u r pretty talented I like ur videos I have been watching many of them .and all wanna say to u is that your videos become borring as the runtime passes no matter how interested you are in the topic .coz of the graphics u use. The simplicity .I mean compare ur videos with ur competitors like veritasuim and other science channels .they have been so good so lately. They have good graphics good animation good way of explaining .so u r perfect ut knowledge is perfect .but for a teacher having a knowledge is not sufficient he must be a entertainer too. He must know the way by which his students understand as well as enjoy the topic .so good luck ...I am kapil siidiqui 17 old .from India. And yeah u doing awesome .my friends are watching u too .