CHEMISTRY COMMUNITY

TanveerDhaliwal3G

For 14g on Endgame, does the size of dip for the intermediate matter?

TanveerDhaliwal3G

I think the k' is supposed to signify the combination of the first rate constant and the concentration of A

TanveerDhaliwal3G

For 5 on the endgame review sheet, the answer key adds the two standard potential values. I thought we couldn't do that because standard potential isn't a state function. Can we only do it in certain cases?

TanveerDhaliwal3G

How is the final going to be administered and formatted? Is it going to be all multiple choice and what is going to be the time limit? Is it going to be in a locked browser/ filmed? Where are we going to turn it in to?

TanveerDhaliwal3G

Can someone explain the reasoning behind how the solutions manual does 7E.3 and why it is completely different from example 7E.1 even though it is the same type of problem.

TanveerDhaliwal3G

I keep getting a different answer from the answer key for 7D.5. The solutions manual subtracts 0.59 from the right side and I don't understand the reasoning behind this.

TanveerDhaliwal3G

I personally go to Lyndon's Workshop on Mondays from 6-8 and Kate's Step-Up/Workshop on Thursdays from 6-8. They're really thorough and good at explaining confusing concepts.

TanveerDhaliwal3G

What is the difference between activation energy and free energy of activation?

TanveerDhaliwal3G

To what extent are we going to need to know calculus?

TanveerDhaliwal3G

How does understanding a reaction kinetically differ from understanding it thermodynamically?

TanveerDhaliwal3G

Do we need to know how to derive any of the integrated rate laws or half-lives?

TanveerDhaliwal3G

How would we be able to predict if a metal will dissolve in a solution?

TanveerDhaliwal3G

What is an example of a concentration cell?

TanveerDhaliwal3G

Which biological examples should we know regarding electrochemistry?

TanveerDhaliwal3G

When do you put a comma instead of a line in a cell diagram?

TanveerDhaliwal3G

What is electromotive force and why does it represent the maximum potential difference?

TanveerDhaliwal3G

How do solar panels work?

TanveerDhaliwal3G

Just to be safe I would know the example generally because he has mentioned it in lecture but I wouldn't worry about understanding it in depth.

TanveerDhaliwal3G

How do acids and bases factor into redox reaction and how do we know which side to add H+ and OH-?

TanveerDhaliwal3G

From what is the Nernst Equation derived from?

TanveerDhaliwal3G

What is the galvanic/voltaic cell and how is it different from an electrochemical cell?

TanveerDhaliwal3G

Which equations can be applied to open systems?

TanveerDhaliwal3G

Is there a list of biological examples that we should know or should we just be aware of the examples Lavelle mentions in class?

TanveerDhaliwal3G

What is the relationship between free energy and work? This is one of the learning objectives from Thermodynamics.

TanveerDhaliwal3G

What two equations is Van't Hoff derived from?

TanveerDhaliwal3G

Can the second law be applied to irreversible reactions?

TanveerDhaliwal3G

The nemonic device is "when you are under Pressure and Depressed, watch TV and get HUGS"
Pressure
density
Temp.
Volume
H Enthalpy
U Internal Energy
G Gibbs Free Energy
S Entropy

The two things that are not considered state functions are Work and Heat.

TanveerDhaliwal3G

Should we know how to derive the equation for work for isothermal reversible reactions? As in know the integral and how it results in the equation?

TanveerDhaliwal3G

Should we be able to produce the graphs associated with each?

TanveerDhaliwal3G

When should we use Cv and when should we use Cp?

TanveerDhaliwal3G

Should we be able to verbally explain all the laws or is knowing the equations associated with each law what we are expected to know?

TanveerDhaliwal3G

What is the relationship between heat capacity at constant volume and heat capacity at constant pressure?

TanveerDhaliwal3G

How do you read and interpret a heating curve?

TanveerDhaliwal3G

Do we need to be able to differentiate between translational energy, rotational energy, and vibrational energy? If so, what is the difference.

TanveerDhaliwal3G

To what extent do we need to know this theorem?

TanveerDhaliwal3G

Why is internal energy a state function when heat and work are not?

TanveerDhaliwal3G

Are all three of the methods Lavelle did on 1/24/20 part of Hess's law or just the first one?

TanveerDhaliwal3G

Why is heat not a state function while enthalpy is?

TanveerDhaliwal3G

A thinking point in 4A asked "how could you ensure that an electric battery produced an electric current reversibly?". How would this be done and how does it relate to the idea that the work a system can do is greatest in a reversible process.

TanveerDhaliwal3G

What makes a reaction reversible?

TanveerDhaliwal3G

How do you do 15b? How do you know what ka is and that the water hydrates the metal?

TanveerDhaliwal3G

Is this reaction endothermic or exothermic and why?

TanveerDhaliwal3G

If both sides have the same amount of moles, what happens when there is a change in pressure.

TanveerDhaliwal3G

What are all the components of Le Chatelier's Principle?

TanveerDhaliwal3G

Why does adding an inert gas and therefor increasing the pressure not have an effect?

TanveerDhaliwal3G

How do buffers work and what do we need to know about them?

TanveerDhaliwal3G

Yes the 5% rule does apply to both because they are essentially the same process.

TanveerDhaliwal3G · Re: Test 1 Test 1 starts the week of 1/21/2020

Test 1 starts the week of 1/21/2020

TanveerDhaliwal3G

In what situations could Q>K?

TanveerDhaliwal3G

K doesn't have units because it is a ratio of molar concentrations.

TanveerDhaliwal3G

Bars and atmospheres are both units of pressure and you should be able to use both as long as the units are the same throughout the problem.

TanveerDhaliwal3G

Is it helpful to review the Ideal gases in Focus 3A-D?

TanveerDhaliwal3G

In organic molecules, how do we know if there is an "implied" Hydrogen?

TanveerDhaliwal3G

Are we required to memorize the amphoteric oxides?

TanveerDhaliwal3G

What causes respiratory acidosis?

TanveerDhaliwal3G

What equations/concepts is deBroglie's equation derived from?

TanveerDhaliwal3G

When will the final grades for the class be posted? I know that Lavelle decides the cut-offs for grades so when will we know our final letter grade.

TanveerDhaliwal3G

Is it fair to assume that all topics will be covered equally on the final or are there some topics that I should study more carefully than others

TanveerDhaliwal3G

How do you do J.21 (b). Is it just a regular molarity problem?

TanveerDhaliwal3G

Neither section 6C.1, the Acidity and Basicity Constants section, nor section 6C.2, the Conjugate Seesaw section, were assigned in the reading or homework problems. Will we need to know about these topics and if so what do we need to know.

TanveerDhaliwal3G

Will we need to know how to calculate pOH because only 6B.1(which only goes over calculating pH) in the textbook was assigned but some of the practice questions require us to know how to calculate it.

TanveerDhaliwal3G

Will we be required to calculate the pH of polyprotic acids like it is explained in section 6E.1?

TanveerDhaliwal3G

All single bonds are sigma bonds. A double bonds has one sigma bond and one pi bond and a triple bond has one sigma bond and two pi bonds.

TanveerDhaliwal3G

What is a metallocene?

TanveerDhaliwal3G

Which coordination compounds are we supposed to know for the final? What are all of their biological functions?

TanveerDhaliwal3G

What is the biological importance of Vitamin B12?

TanveerDhaliwal3G

What compound names do we have to memorize?

TanveerDhaliwal3G

I made flashcards with the names and arrangements. They really help in relating the shape to the name.

TanveerDhaliwal3G

If lone pair-lone pair repulsion is the strongest why are lone pairs not considered when identifying a molecules shape?

TanveerDhaliwal3G

Can someone explain what these are in more detail and how they are related?

TanveerDhaliwal3G

During lecture on Friday, Lavelle talked used a trans- and cis- molecules for an example. What is the difference between the two and how does it affect the molecule?

TanveerDhaliwal3G

How do radicals affect electron arrangement and shape?

TanveerDhaliwal3G

What is the difference between a dipole moment and an instantaneous dipole moment?

TanveerDhaliwal3G

The book says that hydrogen bonding is the strongest type of intermolecular forces but isn't it weaker than covalent and ionic bonds?

TanveerDhaliwal3G

What is the strength of a London Interaction dependent on?

TanveerDhaliwal3G

What causes a London Interaction?

TanveerDhaliwal3G

Which elements can form a Hydrogen bond?

TanveerDhaliwal3G

When will the midterm be graded?

TanveerDhaliwal3G

I think this problem is just asking you which of the compounds is more ionic. Since highly covalent compounds are not very soluble, the less covalent, the more soluble the compound would be; so you're just looking for the compound with the bigger difference in electronegativities(more ionic) using e...

TanveerDhaliwal3G

An atom that is highly polarizable if their electron cloud can readily undergo a large distortion while an atom that has high polarizing power can cause large distortions.

TanveerDhaliwal3G

Should we write out the full formula of formula charge for each atom on the test or can we just use the method Lyndon taught us in the review session

TanveerDhaliwal3G

You can count the number of dots and bonds of the atom and subtract that from the number of valence electrons to find the Formal Charge quickly

TanveerDhaliwal3G

The book says that in modern convention, the dipole arrow is pointed to the positive atom but Lavelle draws it pointed toward the negative atom. Which one do we follow

TanveerDhaliwal3G

What is the relationship between Schrodinger's equation, wave functions, and orbitals

TanveerDhaliwal3G

What content will the midterm be covering? Someone told me that the midterm goes up to the lecture of Friday 10/25 but I just wanted to clarify.

TanveerDhaliwal3G

What are the differences between the two and which one is stronger?

TanveerDhaliwal3G

I did not really understand the definition that the book gave. Can someone clarify what lattice energy is?

TanveerDhaliwal3G

I don't really understand the inert-pair effect. Can someone explain it and give more examples of which elements display the effect?

TanveerDhaliwal3G

Will we need to know how to calculate/do calculation with electron affinity on the midterm or just know the trends that periodic table follows(ie. which part of the table has the highest and lowest electron affinity)

TanveerDhaliwal3G

Electronegativity is the tendency of an atom to attract a bonding pair of electrons while electron affinity is the energy required/released when an electron attaches to an atom(measured in eV).

TanveerDhaliwal3G

Today in lecture, Lavelle mentioned that Cr and Cu are exceptions to the general configuration pattern. Are there any other exceptions that we need to know?

TanveerDhaliwal3G

Can someone explain Hund's rule more in depth?

TanveerDhaliwal3G

I read the textbook after the lectures to make sure I really grasp what he wants us to know and then I do the homework problems. The modules are also extremely helpful because you can pause/slow down the video lecture to make you understand the concepts.

TanveerDhaliwal3G

Can someone explain the difference between intensity and frequency?

TanveerDhaliwal3G

What is a nodal plane and what does it mean that the s-orbitals do not have one?

TanveerDhaliwal3G

In the 10/04 lecture, Lavelle mentioned that light is absorbed/emitted in discrete units(quanta or photons). What is quanta and what are its units?

TanveerDhaliwal3G

Here is a good graphic to sum up the difference between Constructive and Destructive Interference:
https://cdn.britannica.com/07/62907-004-A3A6351E.jpg

TanveerDhaliwal3G

Which observations support the particle behavior view of electromagnetic radiation and which observations support the wave view?

TanveerDhaliwal3G

You usually divide by Avogadro's number when the question gives you the number of molecules and is asking you to find the number of moles of a compound.

TanveerDhaliwal3G

I haven't taken chem since sophomore year of high school so I am in a similar position. One thing that I've been doing is reading the textbook pages that correspond to the lesson because I think it gives me a wider understanding of the topic.

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