Enthalpy Change of Reaction & Formation - Thermochemistry & Calorimetry Practice Problems
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- Опубліковано 3 сер 2016
- This chemistry video tutorial focuses on the calculation of the enthalpy of a reaction using standard molar heats of formation, hess law, and calorimetry. This video contains plenty of notes, formulas / equations, examples, and practice problems to help you pass your next exam / general chemistry test on thermochemistry and thermodynamics. Here is a list of topics:
First Law of Thermodynamics:
• First Law of Thermodyn...
Thermochemistry Equations:
• Thermochemistry Equati...
Internal Energy, Heat, and Work:
• Internal Energy, Heat,...
Thermochemical Equations:
• Thermochemical Equations
Specific Vs Molar Heat Capacity:
• What Is The Difference...
________________________________
Basic Calorimetry Problems:
• How To Solve Basic Cal...
Final Temperature Calorimetry Problems:
• Final Temperature Calo...
Latent Heat of Fusion & Vaporization:
• Latent Heat of Fusion ...
Coffee Cup Calorimeter:
• Coffee Cup Calorimeter...
More Calorimeter Problems:
• Bomb Calorimeter vs Co...
__________________________________
Specific Heat Capacity Problems:
• Specific Heat Capacity...
Hess Law Problems:
• Hess's Law Problems & ...
More Hess Law Problems:
• Hess Law Chemistry Pro...
Enthalpy of Formation & Heat Combustion:
• Enthalpy of Formation ...
Enthalpy Practice Problems:
• Enthalpy Change of Rea...
__________________________________
Speed of Light, Frequency, & Wavelength:
• Speed of Light, Freque...
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At 2:42 , the reason it's products-reactants and not the other way around is because it is the enthalpy change for formation, not dissociation. I was confused about this for a moment, hope this helps if someone else has the same issue.
how do you know if its formation or dissolution
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Professor Organic Chemistry Tutor, thank you for an exceptional explanation of Enthalpy Change of Reaction and Formation in AP/General Chemistry. Although the problem selection is excellent, I am confused about some of the problems in this video. Professor Organic Chemistry Tutor, thanks to the viewers for finding and correcting the error(s) in this video.
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Hey, great videos like always! One suggestion for a future video that I personally believe is lacking in the general chemistry world and is VERY unique and I believe help students learn/visualize general chem concepts better would be creating a video relating general chem major concepts to real world examples, for example how pressure/temperature relates to higher altitudes, and how a hyperbaric oxygen chamber relates to pressure/gas relationship, or how salt melts ice relating to freezing point depression formula. I have yet to see a video on youtube that can link major general chem concepts to real world applications. Just a suggestion, let me know what you think!
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27:00 When we figure out the mass, shouldn't we also include the 30g of NaOH as it is part of the solution?
i was thinking the same. maybe he made a mistake
No the dissolution reaction happens in the water and you are just looking for the change in energy for the water.
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9:10 Carbon is 2C
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At 8:48, Carbon should have a coefficient of 2...
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I've always been taught that enthalpy change was=Energy in - Energy out.
But here Its is Energy of the products - Energy of the reactants.
Are there any difference in the formulas?
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Hi! Are Delta Hsolution and Delta Hreaction the same value in dissolution? Please help! I know qrxn and qsolution are opposite(signs). I'm confused as to if DeltaHsolution and DeltaHreaction are different.
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To add to that, most standardized exams are moving away from plugging in numbers, and moving towards a deeper understanding of the concept.
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Hey is this endothermic and what would be the type of endothermic question asked I understand exothermic. But this wasn't that clear
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Can you please also use the equations cause when you tell us the equation and then proceed into solving the question by analyzing the answer using units it gets very confusing
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I have a question. Around 38:25, when you wrote "12 mol/6540 kJ", why if 6540 kJ not negative? ∆H = -6540, so what am I missing? Thank you!
So did you know now ? 🤔
same question 😅 why it is not negative
very late but i’m assuming that it’s because grams can’t be negative? only thing i can think of.
Very easy to understand 👏
Hey could please explain if you understood at 36.19 that why is it -6540KJ and not -6540KJ/mol
At constant pressure reaction, the change in enthalpy is the heat transfered yes?