CHEMISTRY COMMUNITY

Garret G 2F

When I ask Lavelle if we have to derive equations

Garret G 2F

Garret G 2F

More information on what affects molar entropies can be found here: https://opentextbc.ca/introductorychemistry/chapter/measuring-entropy-and-entropy-changes-2/ "Larger, more complex molecules have higher standard molar enthalpy values than smaller or simpler molecules. There are more possible ...

Garret G 2F

The Arrhenius Equation and constant is discussed here: https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=151&t=29670&p=91991&hilit=Arrhenius+Equation&sid=97f0f97f96c8f028fa56ad589f831963&sid=97f0f97f96c8f028fa56ad589f831963#p91991 "A", I believe, will not need to be c...

Garret G 2F

The difference is that homogenous catalysts are catalysts that are in the same phase as the reactants (solid catalyst-solid reactant) and heterogeneous catalysts are catalysts that are in different phase (solid catalyst-gas reactant). There's information on catalysts on page 76 of the course reader...

Garret G 2F

Intermediates are FORMED and then CONSUMED within the steps of elementary reactions. Catalysts are present from the beginning and are not consumed in the reaction; this is why only a little bit of catalyst is needed to increase the rate of a specific reaction. Here is a video that explains this in ...

Garret G 2F

Here is a good video on the topic. It explicitly explains the difference between order and molecularity: https://youtu.be/qpoAb8rhUr0

Garret G 2F

The Arrhenius Reaction will explain to us how temperature affects rate constants. Here is a good intro video to get an idea of the topic before Lavelle covers it: https://www.youtube.com/watch?v=3cFhhwM-zdc

Garret G 2F

This Bozeman science video does a really great job of explaining exactly what a rate constant is in terms of the rate law: https://www.youtube.com/watch?v=eOSRn0jPbTk

Garret G 2F

Here is a link to more information on zero-order reactions. Most of the things this site covers are also in the book and mentioned by Lavelle, but it is a good summary. https://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/Kinetics/Reaction_Rates/Zero-Order_Reactions

Garret G 2F

What do you call an acid with an attitude?

A-mean-oh acid

Garret G 2F

Here are a few about the Nernst equation:
https://www.youtube.com/watch?v=EGFYS7PdIzA
https://www.youtube.com/watch?v=QaOtsYouet0

Garret G 2F

This video does a great job of explaining how the Nernst equation works intuitively: https://www.youtube.com/watch?v=EGFYS7PdIzA

Garret G 2F

This Khan Academy video derives the equation and talks about its use in depth. https://www.youtube.com/watch?v=QaOtsYouet0

Garret G 2F

Here is how the book answers that on page 274: "For instance, when an ideal gas expands isothermally, its molecules continue to move at the same average speed, so their total kinetic energy remains the same. Because there are no forces between the molecules, their total potential energy also re...

Garret G 2F

This simply means the temperature must be constant.

Garret G 2F

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=129&t=26790&sid=b61b7303c70280c736cdeced7ef66b3d Here is a link to the answer on the same topic.

Garret G 2F

I really like to look at the curves of P vs V and take the area under them as total work done. This YouTube video explains reversible and irreversible processes really well: https://www.youtube.com/watch?v=LdM0DzlS3fQ

Garret G 2F

This video does a really great job of explaining how spontaneity and Gibbs Free Energy are related https://www.youtube.com/watch?v=CHHu-iTwHjg

Garret G 2F

This youtube does a really good job of explaining how to predict changes in entropy: https://www.youtube.com/watch?v=ro3AnXdajAM

Garret G 2F

If we know that ~14.73 moles of H2 were burned in a combustion reaction and that the temperature (298K) and Volume (30L) did not change, just the pressure (16 atm to 4 atm), How do we find the heat given off in the reaction? Do we need to look up the enthalpy of this reaction?

Garret G 2F

I am not sure which table in the book you are referring to, but any table full of bond enthalpies could refer to the making or breaking of bonds. The important thing to remember is that making bonds release energy (exothermic) and breaking them take energy (endothermic). To the second part of the qu...

Garret G 2F

He also mentioned that Carbon's most stable form is Graphite.

Garret G 2F

The book does a really good job of explaining this difference on page 268. Which is says: Do not confuse "heat" and "thermal energy." Heat is energy in transit as a result of a temperature difference. Thermal energy (the energy of thermal motion) is the energy associated with the...

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Re: Post All Chemistry Jokes Here

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Re: complex molecules

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Re: Zero order common?? [ENDORSED]

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