CHEMISTRY COMMUNITY

Brianna

In honor of a very successful quarter of chemistry jokes from my peers in 14B I would just like to say that personally, I tell bad chemistry jokes because all of the good ones Argon!

Brianna

Our course reader states that is always goes by alphabetical order so I would go with that.

Brianna

It is the functional group −CH=CH2

Brianna

for ring structures, the longest carbon chain is always the ring unless the substituent has a higher number of carbons by itself. For example, if your structure was a cyclohexane ring and a heptane subsistent, the heptane is the longest chain and gets to be the main name.

Brianna

I believe in this scenario, it is clear that the hydroxide is not an intermediate because it is not a product that is then used as a reactant like the other intermediates. Notice that it appears on the reactant side and then the product side where as the actual intermediates appear as products and t...

Brianna

K should go up when the concentration of products increases and it should go down when concentration of reactant increases. Is there a problem where this does not occur?

Brianna

When you used the latter equation, did you remember to also use .02569V instead of .0592V? It should be set up: lnk=(nE)/.02569.

Then, when you plug in .033 and 2 for n and E, you should get 10 for K.

Brianna

Did you get lnk= (.12v)/(.02569) and then k=106 when you used n=1?

Brianna

Yes, the double line represents the salt bridge which will always be present in cell diagrams. However, the single line may not always be there is there is not a phase change between the product and reactant.

Brianna

jennymai96 wrote:So for adiabatic system, the energy as heat is different from the energy as work? Thanks!

energy as heat is always separate from energy as work. For Adiabatic systems, since there is no heat transfer, q=0 and Delta U = w

Brianna

When calculating Cv and Cp, the same equation is used except for the Cv calculation, you use 3/2R as the ideal gas constant and for the Cp calculation, you use 5/2R are the ideal gas constant. (This is for monoatomic molecules)

Brianna

When calculating the enthalpy for the reaction involving H20 (l) as when of the reactants, the solutions manual used the enthalpy of formation value for H20 (aq) instead on both part A and C. Is there a rule that we do not calculate reaction enthalpy with the enthalpy of liquor water, only aqueous?

Brianna

For this problem, the solutions manual has an answer which is somewhere in the 2000s and I have done the problem multiple times and ended up with an answer in the 3000s. I checked my work up util the final answer and it all seems to match what the manual has so I am wondering if the solution may be ...

CHEMISTRY COMMUNITY

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Re: Chemistry Jokes

Re: Halogen substituents

Re: Vinyl

Re: Counting Carbons

Re: Homework Problem 15.71

Re: Why K isn't determinant on reactants?

Re: Midterm 2011 7/8 D

Re: HW 14.35 Possible Solution Manual Error?

Re: Double lines in cell diagrams

Re: Useful Summary of Thermodynamic Definitions

Re: Molar Heat Capacity Formula of Cp and Cv

Homework Problem 63

Homework Problem 59