CHEMISTRY COMMUNITY

MichelleKaku1H

How are you supposed to tell if it's a Bronsted or Lewis acid or base? Are you supposed to just be able to tell from the reaction or by looking at the equation? Or is it given? Or is there another way to tell?

MichelleKaku1H

Just wanted to clarify, Bronsted acids and bases have to do with proton donation/acception while Lewis acids and bases have to do with electrons? And when determining if it is strong or weak, is it the same for both types?

MichelleKaku1H

Since the equilibrium constant at 600.K (1.7 x 10^-3) is greater than the equilibrium constant at 700.K (7.8 x 10^-5), less ammonia will be formed with the higher temperature. Therefore raising the temperature will favor the formation of reactants. Hopefully this clarifies it!

MichelleKaku1H

Can someone please clarify how to find/determine the dipole of a molecule and how you can find polarity with that?

MichelleKaku1H

Not sure if this helps, but I believe -ate is used for anion transition metals only!

MichelleKaku1H

Can someone please explain where the H2O came from in the example above? Or is it just always a product in these types of reactions?

MichelleKaku1H

In my discussion today, we talked about this issue, and my TA said that it shouldn't matter what order you put it in, whether the d be in the front or end. The reason the order is so important in electron configuration is to help with the charged atoms. But for hybrid orbitals, it shouldn't matter!

MichelleKaku1H

The bond angle depends on the repulsion which takes bonds and lone pairs into consideration. So, I guess you can memorize the angle depending on the shape, but there are many possibilities. For me, I base it on my drawing of the molecule.

MichelleKaku1H

Yes! Multiply the indeterminacy by two because this gives the range for the velocity.

MichelleKaku1H

Yes! Just remember that noble gases are an exception when it comes to electron affinity!

MichelleKaku1H

Just to make sure, there are no other exceptions to the rules that we need to know right? It's just copper and chromium?

MichelleKaku1H

Yes! Even though you weren't specifically given a velocity, you can find the delta v by multiplying the uncertainty in velocity by two to account for adding and subtracting 1.00x10^-3 m/s.

MichelleKaku1H

To clarify, ionization energy is the energy needed to remove an electron from an atom? Is this a consistent number for each atom? Or does it depend on the situation? Or basically, is it known? Or does it need to be solved for?

MichelleKaku1H

This doesn't mean reactive to a certain element or anything, but it means that the s-block metals are more unstable than the p-block ones. And the answer from the solutions manual states "the ionization energies of the s-block metals are considerably lower, thus making it easier for them to los...

MichelleKaku1H

I believe it refers to the double derivative of sin or cos wave functions. Because when you take the derivative of sin or cos twice, you return back to sin or cos (despite the negatives). Hopefully that makes some sense!

MichelleKaku1H

Justin Chu 1C wrote:That is correct. For the d-orbital, you can have 5 different numbers for your magnetic quantum number, specifically -2, -1, 0, 1, 2.

Can someone please explain how you get the magnetic quantum numbers of -2, -1, 0, 1, 2?

MichelleKaku1H

Can someone please explain the difference between the two? And what exactly is diffraction? I'm sorry, I'm really confused.

MichelleKaku1H

Is "photon" and "energy" interchangeable? When question talks about a photon, does that mean the energy?

MichelleKaku1H

When finding empirical formulas, do you always have to find the mass percent composition? How do you know when you need to find it? For example, in problem F.13 I didn't need to find it.

MichelleKaku1H

Yes, you cannot just simply add an element to the chemical equation if it isn't produced. To balance an equation, you need to add stoichiometric coefficients, not add elements to the reaction.

MichelleKaku1H

I get confused with sig figs when there are zeros. For example, if the number is 0.020, is there 2 or 3 sig figs?

CHEMISTRY COMMUNITY

Search found 21 matches

Bronsted vs. Lewis

Bronsted vs. Lewis

Re: Problem 11.81

Dipole Moments and Polarity

Re: Naming the metal

Re: How would you know which reactants/products create certain compounds (ex J.7)?

Re: Order of s,p,d in Names of Hybrid Orbitals

Re: Bond Angle

Re: delta v

Re: Electron Affinity - P, Na, Ar

Re: Exceptions to the Configuration Rules

Re: Sample Problem (Example 1.7// Textbook)

Ionization Energy [ENDORSED]

Re: 2.75

Re: The "H" Term in the Schrodinger Equation

Re: 2.19 Part B

Constructive vs. Destructive Interference [ENDORSED]

Photon vs. Energy [ENDORSED]

Mass Percent Composition

Re: H1 // Book Problem [ENDORSED]

Re: Sig Figs