CHEMISTRY COMMUNITY

Jata_Kavya_3A

Also, when naming cycloalkanes, the where the numbering on the double bond have to begin? The numbering has to encompass the both ends of the double bond next to each other right?

Jata_Kavya_3A

When looking at numbering, we try to prioritize lowest numbers over priority of substituents right?
For example, if we had the substituents of a methyl and propyl group on an alkane, and the starting with the methyl would get the lowest numbering, we would start with methyl right?

Jata_Kavya_3A

So catalysts can be included in the rate law, but what about intermediates?

Jata_Kavya_3A

yes i agree

Jata_Kavya_3A

yes i agree

Jata_Kavya_3A

for every question with bond enthalpies vs enthalpies of formation, will the question specify what they want?

Jata_Kavya_3A

So basically any structure with resonance, has less enthalpy.

Jata_Kavya_3A

When delta H is positive and delta S is negative, there is no way for there to be spontaneity at any temperature. This is is because entropy of the system is decreasing, and the enthalpy of heat is increasing. naturally, this would never occur in the real world. If it was vice versa, a positive Delt...

Jata_Kavya_3A

So basically to summarize:

q is generally in kJ
Delta H usually in kJ
Standard enthalpy of formation is only kJ/mol

Jata_Kavya_3A

if the system is losing heat, then the internal energy of the system decreases because q is negative. Vice versa, if the system absorbs or gains heat.

Jata_Kavya_3A

The units used are dependent on the situation. Typically, it is given in kj/mol unless otherwise stated.

Jata_Kavya_3A

When we are determining whether to use the z>8 or z<8 diagram for a molecule, which atom do we look at? Like for example for, NO, do we look at the z for nitrogen or oxygen ?

Jata_Kavya_3A

How do you feel after that O chem exam?

I'm DIEN!

Jata_Kavya_3A

What are the strongest vs weakest oxyacids?

Jata_Kavya_3A

How can we immediately recognize if its a strong acid or weak acid, without memorizing them?

Jata_Kavya_3A

Why can you not perform a titration on a weak acid and weak base? Why does one or the other have to be strong?

Jata_Kavya_3A

How does expansion/compression affect which way the equilibrium shifts? like what is the relationship

Jata_Kavya_3A

Can ligands be single atoms or do they have to be molecules? also, what are commonly used ligands?

Jata_Kavya_3A

How do we find bond order from a molecular orbital diagram?

Jata_Kavya_3A

For every metal that can have multiple valence electrons, will we be given the number of valence electron it has? for example alminium (III) oxide, will we get the III?

Jata_Kavya_3A

you can also think of electron affinity as an atom's tendency or natural ability for wanting electrons. An atom with a stronger electron affinity is one that would be more likely to take an electron to complete a sub shell.

Jata_Kavya_3A

It is based on the equation , E(photon) = threshold energy + E(excess). If energy required to remove the electron is equal to the energy of the photon, then you will not have any excess kinetic energy.

CHEMISTRY COMMUNITY

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