CHEMISTRY COMMUNITY

Nasir_Ahmed

I believe you only do that when it involves alkenes or alkynes in order to distinguish where the second or third bond is.

Nasir_Ahmed

The question says "Comment on the possible values for standard enthalpies of activation, delta(H^o) activated complex, and the standard entropies of activation, delta(S^o)activated complex." The answer states that the delta(H^o)activated complex will always be positive and are usually much...

Nasir_Ahmed

How should we include names of halogens when naming the whole molecule (I know the name should include carbon and halogens only) I'm not sure what you mean by including halogens. I was under the impression that we're only dealing with hydrocarbons, and for those you really only need to know the fir...

Nasir_Ahmed

So the rate stays relatively the same because a rise in temperature wouldn't help the reaction happen that much anyway because of the low activation energy?

Nasir_Ahmed

Thank you!

Nasir_Ahmed

In the course reader, it says that when you have a galvanic or voltaic cell with the same components at different concentrations, the standard reduction potential will always be 0 V. Why is that?

Nasir_Ahmed

^ I'm pretty sure it's just any metal.

Nasir_Ahmed

Hey guys, I wasn't able to make lecture on Friday but I looked through the course reader and I'm confused with the Nernst Equation. How is the variable 0.05916 derived?

Nasir_Ahmed

There's no error. You always have to balance the equation before you even get started. So a final product of 2NH3 is correct.

Nasir_Ahmed

I understand in this problem when you assume it took 10 hrs for the ice to melt, but in the solutions manual it says to divide 10 hrs by the half hour it took for the water to reach 5 degrees Celsius and then multiply it by the 3135 J it took to get it there...my question is, why do we divide the 10...

Nasir_Ahmed

I was also confused by this, but I assumed it was because it was internal energy in its standard state.

Nasir_Ahmed

I believe it isn't in the liquid state because the values given in tables 8.6 and 8.7 are for the compounds in the gaseous state. That is why we have to go through the process of subtracting it by the delta H of vaporization.

Nasir_Ahmed

Thank you. That was very helpful.

Nasir_Ahmed

I'm having some trouble with part a) on problem 8.67. It's asking to find the enthalpy of formation of H2O in the liquid state, but in the solution you have to factor in breaking the bonds between H2 and O2. If we're trying to find the enthalpy of formation, why do we have to calculate the energy to...

Nasir_Ahmed

A good way to remember it is that an extensive property is reliant on external conditions (aka the amount of substance) and an intensive property has more to do with individual units so external forces don't matter as much.

Nasir_Ahmed

I was reading the book and the definitions for Bronsted and Lewis acids seemed to be the opposite of each other and the wording was a bit confusing to me. Could anyone help clarify?

Nasir_Ahmed

Ah yes okay thank you. I must've missed it in the notes.

Nasir_Ahmed

Okay, this is probably a ridiculous question, but when finding the pH or pOH of weak acids and bases what does the "p" in front of the Ka or Kb represent? Is it something we should know?

Nasir_Ahmed

I keep seeing online that prefixes like "di-" or "tri-" supersede alphabetical order when it comes to the ligands in naming coordination compounds. Is that true? From what I've gotten in class is that it's only based on alphabetical order.

Nasir_Ahmed

So I just wanted to double check something. When talking about molecular orbitals, the * next to like a sigma means it is antibonding?

Nasir_Ahmed

I'm not sure if I just missed Professor Lavelle's explanation of it, but could someone help me understand what Hybridization actually is? Is it just when elements bond with Hydrogen?

Nasir_Ahmed

I'm a bit confused. We haven't covered sigma or pi bonds in our lectures or discussion sections. Will they be as prevalent on the Quiz as they are on the practice quizzes?

Nasir_Ahmed

Is there any way for an atom to have more than 8 valence electrons? Would that make it insanely unstable?

Nasir_Ahmed

I was wondering if anyone could help me with problem 1.9 in the textbook. I'm not sure exactly how I'm supposed to deduce everything in the table from the information given. It doesn't seem like enough to go off of. Thanks

Nasir_Ahmed

So light as a wave is not an actual fact? It is just a mathematical representation to help us understand the equation? Do we have any idea how light moves?

CHEMISTRY COMMUNITY

Search found 25 matches

Re: Naming [ENDORSED]

Question 4.37

Re: Naming Organic Molecules

Re: Activation Energy

Re: Concentration Cells

Concentration Cells

Re: Determing salt bridge

Nernst Equation [ENDORSED]

Re: Quiz 1 Prep #5

Hmwk Problem 8.91

Re: 8.93 part c

Re: HW question 8.67

Re: Hmwk Problem 8.67 [ENDORSED]

Hmwk Problem 8.67 [ENDORSED]

Re: Heat Capacity

Bronsted vs Lewis Acid Definition

Re: pKa for Weak Acids [ENDORSED]

pKa for Weak Acids [ENDORSED]

Prefixes in Naming Order [ENDORSED]

* and Antibonding

Hybridization

Sigma and Pi Bonds for Quiz 2

The Octet

Hmwk Problem 1.9 [ENDORSED]

Light as a Wave