Search found 7 matches

by Brandon N 3A
Sun Mar 12, 2017 11:47 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cis- and Trans- Molecules
Replies: 1
Views: 230

Cis- and Trans- Molecules

Does a molecule being cis or trans impact the stability of the molecule? If so, which is more stable? Because it seems like the repulsion between two groups on the same side in a cis molecule would decrease stability?
by Brandon N 3A
Sun Mar 12, 2017 11:32 pm
Forum: *Alkenes
Topic: Naming Alkenes and Alkynes
Replies: 2
Views: 343

Re: Naming Alkenes and Alkynes

you count the carbons starting at the end of the chain that yield lower numbers for the alkyl groups attached to the chain. Unless there is a functional group attached to the chain, because functional groups get priority in numbering so you would count in a way that gives them the lower number.
by Brandon N 3A
Sun Feb 26, 2017 11:22 pm
Forum: *Electrophiles
Topic: electrophiles and nucleophiles
Replies: 2
Views: 256

electrophiles and nucleophiles

Does a molecule have to have a positive or negative charge in order to be a nucleophile or electrophile? If not, then what makes the molecule attracted to positively or negatively charges particles respectively?
by Brandon N 3A
Sun Feb 26, 2017 11:12 pm
Forum: *Electrophiles
Topic: Quiz 2 Prep
Replies: 1
Views: 221

Re: Quiz 2 Prep

For number 10, you know the reaction is second order from the given rate equation, so you use the second order integrated rate law to solve for t for both concentrations. The answer comes out to be 1/k for the first set of concentrations (1.0 to 0.50M) and 2/k for the second set (0.50 to 0.25). The ...
by Brandon N 3A
Sun Feb 12, 2017 6:22 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: HW 14.9 Units
Replies: 1
Views: 245

HW 14.9 Units

In HW 14.9 we calculate for standard reaction Gibbs free energy, but my question is: why is it that the units for the answers in the back are in J/mol? Are moles not canceled by the multiplication of n and F in the equation deltaG=-nFEcell? Because in example 14.3 in the book, moles are canceled and...
by Brandon N 3A
Sat Feb 04, 2017 5:22 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Different Versions of the Nernst Equation
Replies: 2
Views: 370

Re: Different Versions of the Nernst Equation

In lecture it was mentioned that the nernst equation with log instead of ln is used a lot when dealing with biological reactions because its better fitted to deal with pH (since pH calculations involve log base 10 and not ln). As for the example on page 53, since were solving for Ecell from Estandar...

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