CHEMISTRY COMMUNITY

aaronharouni

Okay, thanks!!

aaronharouni

This helps a lot. Thank you!

aaronharouni

Why is delta S of system negative when bonds are formed in a reaction?

aaronharouni

What is the difference between E and Eo and how do we know whether we should use E = Eo -RT/nF ln Q or Eo =RT/nF ln K

aaronharouni

Can someone explain to me how to do 4A.13 in the textbook, the answer book doesnt seem to be answering the question it is asking.

aaronharouni

For question 7C.5 part b, why is HBrO included in the rate law if it is an intermediate?

aaronharouni

In question 6K.1 A, why is it that C is being oxidized in the reaction?

aaronharouni

When would we have to use the differential rate law equation d[r]dt= k[R]^n ?

aaronharouni

I don't think so but if we do, the intermediate steps will probably be given and we just have to add them in the equation.

aaronharouni

Why is it that we only consider the reactants with integrated rate laws?

aaronharouni

Why doesn't a catalyst/enzyme change the reaction rate?

aaronharouni

What is the molecularity of a zero order reaction?

aaronharouni

Why does the slowest step determine the reaction rate?

aaronharouni

I don't think it matters as long as you match it with what your doing on the opposite side and if you watch out for positive and negative sign.

aaronharouni

Will the test include the stuff we will learn during Monday's lecture? Will it include gibbs free energy?

aaronharouni

What is the significance of the salt bridge?

aaronharouni

They are for sure closed systems

aaronharouni

14BL is almost like adding another class but a little lighter

aaronharouni

Not the full answer but I know that since energy is released, no energy is required to start up the reaction

aaronharouni

When will exam grades be posted?

aaronharouni

Do we need a constant pressure or temperature to use the Vant Hoff equation?

aaronharouni

Is delta g considered a state function?

aaronharouni

Which equations will be given to us and which won't be for the midterm?

aaronharouni

How do you know which method to use when dealing with bond enthalpies?

aaronharouni

what's the difference between delta H and delta H with the degree symbol?

aaronharouni

With Kc you must use molar concentrations but for Kp its partial pressures.

aaronharouni

How do we know when to assume the pressure of a system as 1 atm?

aaronharouni

How does an open beaker imply constant pressure?

aaronharouni

What is a good and easy way of understanding state properties?

aaronharouni

In 6D.7 a) how do you find the Ka constant ?

aaronharouni

In a question, how are we able to tell when to use and ICE chart??

aaronharouni

In questions 6D.3, how do you find the Kb constant? Im having a lot of trouble figuring that out.

aaronharouni

For the test are we given all equations? Are there any that we need to have memorized or that would be helpful to memorize?

aaronharouni

Its all free response but sometimes he likes to throw in some conceptual multiple choice questions on the midterm and final.

aaronharouni

Even though its not on there, I would learn it since he talked about it in lecture and therefore it could show up on an exam.

aaronharouni

Whats the difference betwen Kc Kp and Q?

aaronharouni

Why do gases need to be converted from partial pressure to concentration?

aaronharouni

Why are solids and liquids not included in equilibrium?

aaronharouni

Do we assume that strong acids ionize 100%?

aaronharouni

Whats the difference between an acid, bronsted acid, and lewis acid?

aaronharouni

Do ligands have to have lone pairs?

aaronharouni

Do all molecules have London dispersion forces?

aaronharouni

Would AlCl3 have a net dipole moment?

aaronharouni

What is the difference between polarizability and polarizing power?

aaronharouni

No better way than just memorizing them and more importantly understanding the 3-dimensional shapes and why the angles are what they are.

aaronharouni

How can a sigma bond turn into a pi bond?

aaronharouni

Im pretty sure your fine with either one

aaronharouni

What is an S character of a hybrid orbital?

aaronharouni

How would you draw the Lewis structure for (ch3)2be? And what would its shape around the central atom be?

aaronharouni

What is the difference between angular shape and bent shape?

aaronharouni

Why does the electron pair on central Cl atom of ClO2+ result in a trigonal planar arrangement?

aaronharouni

In class, Dr. Lavelle only reviewed a few of the molecular shapes. Should we be memorizing and learning how to draw all of the other ones as well?

aaronharouni

[Kr] 4d4 5s1

aaronharouni

Does the electron affinity trend apply to the noble gasses?

aaronharouni

What is an easy way to remember all of the exceptions of octet?

aaronharouni

How are bond lengths the same if there are two double bonds and one single bond? Is it bc of resonance?

aaronharouni

Why does cl have a higher electron affinity than f?

aaronharouni

When do you put lines and when do you put dots when drawing Lewis structures?

aaronharouni

Why does the B in BF3 only have 6 electrons in its Lewis structure?

aaronharouni

What is an easy way to remember the octet exceptions?

aaronharouni

I would watch a youtube video to help explain this but basically, electrons fill up orbitals in the order of 1s, 2s, 2p, 3s, etc at is shown on the periodic table. In each orbital, an electron fills up in each pair before they start to pair up (general rule). The reason why they have opposite spins ...

aaronharouni

Why are s-block metals typically more reactive than p-block metals?

aaronharouni

Why does O have a lower ionization energy than N or F if ionization energy increases from left to right on the P table?

aaronharouni

In what way do electrons have wavelike properties?

aaronharouni

How does the photoelectric effect support the idea that electromagnetic radiation has the properties of particles?

aaronharouni

Why does a decrease in the frequency of electromagnetic radiation cause the extent of the change in the electrical field at a given point to decrease?

aaronharouni

Do we need to know how to translate the name of chemical compounds into their respective formulas for the quiz?

aaronharouni

When using the periodic table how do you know where to round off?

aaronharouni

When is it appropriate or not to convert your answer into scientific notation? For example, in the homework, I got an answer as 1330 while the solutions manual has the answer as 1.3x10^3. Does it even make a difference which answer I write?

aaronharouni

Why aren't there any good chemistry jokes?

Because they all Argon.

aaronharouni

The molecular formula cannot be found in this question. Usually, the molecular mass is needed and the problem provides you with this information. In this question, C8H8O3 is the empirical formula found through the mass percentages. To find the molecular formula, you would need the MM.

aaronharouni

This was very helpful. Thank you so much for the advice!!

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