CHEMISTRY COMMUNITY

Rosalva_Mejia_41

After finding the value of x in the ICE table, is that the value of H3O+ ions, and whichever molecule that is x?
For some questions, it's shown that x is added to the molar concentration to find the amount of H3O+ ions, How do we determine to do so?

Rosalva_Mejia_41

I don't think you can really tell by the chemical equation. You need to solve for pka/pkb or for phka/phkb in order to determine which ones are stronger or weaker.

Rosalva_Mejia_41

A side really isn't favored in equilibrium. Its simply if one side has more concentration of ions, then it'll be more. I don't think the rate is really related. Reverse and forward reactions go at the sams rate. And since it's at equilibrium, one side adapts to keep it that way.

Rosalva_Mejia_41

Great, thanks for clearing that up.

Rosalva_Mejia_41

Quick question, when naming the compounds, when do we use prefixes like bis- and suffixes like -ate for the anionic compounds?

Rosalva_Mejia_41

I really didn't understand what you're asking but perhaps this link can explain how to label it.http://chem.libretexts.org/Core/Physica ... r_Orbitals

Rosalva_Mejia_41

It would be sp3d, because there's 5 regions of electrons. The s counts as one, adding p3 is four, and d makes five regions.

Rosalva_Mejia_41

When using the Lewis structures, how do we do structures for molecules for example problem 4.11, when there's xenon or iodine, when they have only one unpaired electron bond have several atoms attached to them? They don't follow the octet rule so how do we determine how many atoms the whole molecule...

Rosalva_Mejia_41

They have one sigma and two pi bonds.

Rosalva_Mejia_41

Okay, thank you.

Rosalva_Mejia_41

What about when we refer to sigma and pi bonds? How do we distinguish the orbital and the kind of bond it corresponds to?

Rosalva_Mejia_41

Can some explain when or why we use hybridization? Are we expected to know how to label bonds within a molecule that are hybridized?

Rosalva_Mejia_41

Can you help explain how to draw Lewis structures for elements like xeon? Since the orbitals are filled I thought it couldn't bond with other elements.

Rosalva_Mejia_41

So that goes for pretty much all ions in the d block right?

Rosalva_Mejia_41

So for the quiz, the equation we memorize doesn't matter as long as we can distinguish if the energy is decresing or increasing and apply correctly, right?

Rosalva_Mejia_41

Yea that's what originally did but the workbook had a different answer. Probably a mistake. Thank you.

Rosalva_Mejia_41

A problem asks for the energy of a photon emitted with a wavelength of 5.50x10^2. I multiplied it by plank's constant and got the answer. However, I don't understand why that is if the original equations is E= h x frequency, not wavelength.

Rosalva_Mejia_41

Maybe this can help?https://www.angelo.edu/faculty/kboudrea/general/quantum_numbers/Quantum_Numbers.htm#Angular Momentum

Rosalva_Mejia_41

Within the process, why do we have thr add all of the mole amounts and subtract it to caffeine's mass?

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