Search found 20 matches
- Fri Mar 11, 2016 12:29 am
- Forum: *Cycloalkenes
- Topic: Difference between neo-, iso-, tert-, etc.?
- Replies: 1
- Views: 577
Difference between neo-, iso-, tert-, etc.?
What is the difference between those prefixes? Are they used in common naming or IUPAC naming?
- Fri Mar 11, 2016 12:23 am
- Forum: *Alkanes
- Topic: Functional Groups
- Replies: 3
- Views: 850
Functional Groups
When you have more than one functional group in a single molecule, does it matter which one you name first? Or can you put them in any order?
- Tue Feb 09, 2016 5:50 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Question 14.91
- Replies: 1
- Views: 403
Re: Question 14.91
Almost positive that's a solution manual error, I'm as confused as you are
- Tue Feb 09, 2016 3:40 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: How to derive equation for K? (14.35)
- Replies: 1
- Views: 488
How to derive equation for K? (14.35)
How is the equation used in problem 14.35 derived? Or where did it come from? The equation is ln k=nFE/RT
- Tue Feb 09, 2016 12:39 am
- Forum: Balancing Redox Reactions
- Topic: Homework 14.17 Help
- Replies: 1
- Views: 477
Homework 14.17 Help
14.17 asks you to write balanced half-reactions for the redox reaction of a solution of potassium permanganate and iron(II) chloride.
How do you know what the charge of manganese (MnO4-) will be on the other side of the half reaction?
How do you know what the charge of manganese (MnO4-) will be on the other side of the half reaction?
- Wed Jan 20, 2016 3:13 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Enthalpy Equation Clarification
- Replies: 2
- Views: 496
Enthalpy Equation Clarification
I've noticed that sometimes to find enthalpy, the equation Q=mC
T is used while other times, instead of mass, the number of moles is used (Q=nCT). Why is this? For example, in homework 8.31, Q=nCT is used, but when I solved the problem I used mass rather than moles.
- Mon Jan 18, 2016 10:25 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Equations used in Homework 8.25
- Replies: 1
- Views: 480
Equations used in Homework 8.25
Where does the C=q/T equation come from? And why do we ignore the values for Liters and Molarities that the question gives us?
- Mon Jan 18, 2016 9:46 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Sig Figs in 8.21
- Replies: 2
- Views: 506
Sig Figs in 8.21
The question gives you a bunch of values with 3 sig figs, yet the answer in the solution's manual only has 2 sig figs (25 Degrees Celsius). Why? Shouldn't the answer have 3 sig figs?
- Wed Jan 13, 2016 9:33 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Calorimeter
- Replies: 1
- Views: 380
Calorimeter
What, if any, is the difference between a bomb calorimeter and a coffee cup calorimeter? Can they be used interchangeably?
- Fri Jan 08, 2016 8:30 am
- Forum: Phase Changes & Related Calculations
- Topic: Vaporization Heat Transfer
- Replies: 3
- Views: 983
Re: Vaporization Heat Transfer
The above responses are correct. Vaporization is endothermic. Think about it in regards to water; vaporization is the change between liquid water and gaseous water. In order for the water particles to be moving fast enough to be in the gaseous phase, they must absorb heat. Thus, the process in endot...
- Wed Nov 18, 2015 5:00 pm
- Forum: Naming
- Topic: Correct name for Na[Co(NH3)3Cl3]?
- Replies: 8
- Views: 9041
Re: Correct name for Na[Co(NH3)3Cl3]?
Why is there an added "ate" to the end if it isn't an anion?
- Tue Nov 10, 2015 12:23 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium constant and p
- Replies: 5
- Views: 761
Re: Equilibrium constant and p
I also had the same question. When writing equilibrium expressions, do you have to write them as (in the case of question 11.3) as K=(PN2O3)/(PN2)(PO3) or is K=[N2O3]/[N2][O3] also correct?
- Sun Nov 08, 2015 3:47 pm
- Forum: Naming
- Topic: Use of Parenthesis
- Replies: 1
- Views: 451
Use of Parenthesis
Why is it that sometimes, parenthesis are used in the formulas of coordination compounds? For example, in sodium bisoxolato(diaqua) ferrate (III), would I be marked wrong if I dropped the parenthesis around diaqua?
- Sun Nov 08, 2015 3:27 pm
- Forum: Naming
- Topic: Order of Listing
- Replies: 2
- Views: 589
Order of Listing
When you are given the name of a coordination compound (for example, triamminediaquahydroxidochromium(II) chloride) and asked to write the formula, does the order you list the ligands matter? For example, would it make a difference if you wrote the formula as [Cr(NH3)3(OH2)2(OH)]Cl or as [Cr(OH2)2(O...
- Mon Oct 26, 2015 11:20 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Naming the molecular geometry vs regions of electrons
- Replies: 1
- Views: 419
Naming the molecular geometry vs regions of electrons
In the solutions manual for #4.5, I noticed that it gave both the molecular geometry (bent/angular) and the electron domain (trigonal planar) when the question asked for the shape of the ion. However when I answered the question, I only answered for the molecular geometry. In the future, should I an...
- Mon Oct 26, 2015 11:08 am
- Forum: Lewis Structures
- Topic: Drawing Lewis Structures
- Replies: 1
- Views: 365
Drawing Lewis Structures
As I moved into the chapter 4 homework, I noticed that some Lewis Structures in the solutions manual were drawn with the thick or dashed lines indicating 3D shape. On a quiz or test, will we have to draw Lewis Structures like that or is it okay to demonstrate them on a 2D level?
- Tue Oct 20, 2015 8:31 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarisability
- Replies: 1
- Views: 488
Polarisability
Between N3- and O2-, which ion is more polarizable? I know that as size increases, so does polarisability, so logically O2-, which has an extra proton, would be bigger; however, the electron-electron repulsion in N3- make it seem as if the radius of N3- would be larger. So what is it?
- Tue Oct 20, 2015 7:43 pm
- Forum: Bond Lengths & Energies
- Topic: Bond Strength In Same Group
- Replies: 6
- Views: 2211
Bond Strength In Same Group
I understand that bond strength is determined by bond length, and that triple bonds are stronger than double bonds, and double bonds stronger than single; however, I don't understand how you can determine which bond is stronger between two compounds with nearly identical Lewis structures but with di...
- Wed Oct 14, 2015 3:33 pm
- Forum: Properties of Light
- Topic: Intensity vs. Energy
- Replies: 1
- Views: 6899
Intensity vs. Energy
What is the difference between the intensity of light and the energy of light? Why is it that when you double the frequency, the energy is not effected but the intensity of light is?
- Mon Oct 05, 2015 11:20 am
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Question about the Rydberg Formula?
- Replies: 1
- Views: 747
Question about the Rydberg Formula?
I've been noticing some different forms of the Rydberg Formula showing up during lectures, discussions, and while doing homework and am rather confused as to which one is... well, correct. Why is it that sometimes the equation is written as the first attached picture and not the second? And vise-ver...