Search found 27 matches
- Sun Jun 10, 2018 8:53 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acid Strength
- Replies: 5
- Views: 3055
Re: Acid Strength
In addition, to find which compound has more basic strength, basicity, would you also have to compare conjugate acids? *That is, discovering the conjugate acid of the basic compound, ranking those on acidity, and then reversing the order ranked to find the most/least basic?
- Sun Jun 10, 2018 8:47 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: ethylenediaminetetraacetato (edta)
- Replies: 6
- Views: 1454
Re: ethylenediaminetetraacetato (edta)
What is the critical importance of edta? *I have been hearing this term a lot recently, and I was wondering if someone could explain the composition of edta, and the properties it has
- Sun Jun 10, 2018 8:44 pm
- Forum: Naming
- Topic: Coordination number
- Replies: 10
- Views: 2122
Re: Coordination number
While I understand that the coordination number denotes the number of ligands attached to a central atom, what importance does this serve to discover any further aspects of the molecule involved?
- Sun Jun 03, 2018 9:12 pm
- Forum: Hybridization
- Topic: basics of hybridization
- Replies: 18
- Views: 2515
Re: basics of hybridization
In conjunction with hybridization, I am confused as to why we denote elements molecules with notation such as sp^2, on the basis of its lone pair & type of bond it shares? What does this notation serve to inform viewers of, other than clutter up a Lewis drawing with more information?
- Sun Jun 03, 2018 9:07 pm
- Forum: Hybridization
- Topic: Differences Between Pi and Sigma bonds
- Replies: 7
- Views: 790
Re: Differences Between Pi and Sigma bonds
So, in relation to sigma and pie bonds, does each increase in bond length constrain the molecule on an increasing number of axis(s)? That is, a sigma bond just constrains it on an axis, a pi bond would not allow it to rotate, and a triple bond would mean even more constraints in molecular movement?
- Sun Jun 03, 2018 9:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Naming Structures
- Replies: 8
- Views: 1061
Re: Naming Structures
Also, just to be clear, when asked to name the VSEPR shape of a molecule, that would not be the same as asking to name the molecular shape of a molecule? *This would revolve around not counting in the lone pairs for the molecular shape. Also, which one of these two are we most likely to be asked to ...
- Sun May 27, 2018 9:27 pm
- Forum: Octet Exceptions
- Topic: expanded octets
- Replies: 5
- Views: 747
Re: expanded octets
In the construction of Lewis models, is the rule for expanded octets as follows: If it is on period (3) of the periodic table or lower, it will be able to handle an expanded octet? *Does this follow for all elements on period (3) of the periodic table?
- Sun May 27, 2018 9:23 pm
- Forum: Bond Lengths & Energies
- Topic: Test 3 bond length question
- Replies: 8
- Views: 1052
Re: Test 3 bond length question
Additionally, part of the question was a comparison of two double bonds, each with two lone pairs. In this scenario, how would you discover which of the two bond lengths was longer? * Also, is it correct in thinking the lone pairs stretch out the bond length?
- Sun May 27, 2018 9:20 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma and pi
- Replies: 12
- Views: 1613
Re: Sigma and pi
If every double bond is one sigma and one pie bond, why not simply denote double bonds as such since the beginning? Or is this statement not reversible, in which a sigma and pie bond together do not always make a double bond?
- Sun May 20, 2018 10:35 pm
- Forum: Bond Lengths & Energies
- Topic: Double Bond vs Triple Bond
- Replies: 7
- Views: 1272
Re: Double Bond vs Triple Bond
In reference to the construction of double/triple bonds in Lewis structures, will it be acceptable to make quadruple bonds within compounds? *I believe Dr. Lavelle briefly talked about this during lecture
- Sun May 20, 2018 10:25 pm
- Forum: Electronegativity
- Topic: Isoelectronic [ENDORSED]
- Replies: 11
- Views: 1550
Re: Isoelectronic [ENDORSED]
In the scenario of two elements being isoelectronic, why wouldn't the element gaining or losing electrons entirely become the other element it's isoelectronic to? Ie. Why wouldn't F- just become Ne?
- Sun May 20, 2018 10:22 pm
- Forum: Bond Lengths & Energies
- Topic: Bond Strength
- Replies: 5
- Views: 868
Re: Bond Strength
Why do we even classify compounds with bonds lengths and strengths? I was led to believe that these are never a true depiction of such, in relation to concepts such as the average bond length of resonance structures
- Sun May 13, 2018 7:26 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Most Favorable Formal Charge
- Replies: 5
- Views: 3093
Re: Most Favorable Formal Charge
Would it ever be possible for an element with a radical electron, in a compound, to have a formal charge of zero? As well, is there a lowest amount of elements in a compound where it is unnecessary to calculate formal charge?
- Sun May 13, 2018 7:11 pm
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 5
- Views: 2731
Re: Resonance Structures
Would it also be applicable to just state the average length, in Angstrom units, of the bond lengths, in a scenario of possibly interchangeable single and double bonds? * Or would this poorly depict the image of resonance structures?
- Sun May 13, 2018 7:07 pm
- Forum: Octet Exceptions
- Topic: Radical Confusion
- Replies: 3
- Views: 507
Re: Radical Confusion
How is it that radical structures even appear? I would assume that the octet rule is the final test for determining if a compound is really able to exist. That being said, is it that radical electrons appear solely in nature or are they man-made?
- Tue Apr 24, 2018 11:36 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: d and s blocks
- Replies: 16
- Views: 2227
Re: d and s blocks
Why is there no energy level after the f block? By having energy levels end at the f block, what is this representative of?
- Tue Apr 24, 2018 11:34 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Radial Nodes/Planes
- Replies: 2
- Views: 539
Re: Radial Nodes/Planes
What is the reasoning behind, for one to remember, no electrons being found in the radial node in correlation with it having no density?
- Tue Apr 24, 2018 11:31 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Lobes [ENDORSED]
- Replies: 4
- Views: 633
Re: Lobes [ENDORSED]
Do the lobes of an orbital dictate the exact location of where an electron may appear, or the general area of where it can be found?
- Thu Apr 19, 2018 7:00 pm
- Forum: Properties of Light
- Topic: units for frequency and wavelength [ENDORSED]
- Replies: 9
- Views: 780
Re: units for frequency and wavelength [ENDORSED]
Would a typical question ask one to find both the frequency and the wavelength, and if so, what order would they need to found in?
- Thu Apr 19, 2018 6:56 pm
- Forum: Properties of Light
- Topic: still don't uderrsatnd what a photon is [ENDORSED]
- Replies: 20
- Views: 1459
Re: still don't uderrsatnd what a photon is [ENDORSED]
Are photons comparative to electrons in some sense, and could we think of them similar to atoms in some ways?
- Thu Apr 19, 2018 6:54 pm
- Forum: Properties of Electrons
- Topic: Diffraction meaning
- Replies: 6
- Views: 642
Re: Diffraction meaning
Are there any cases as to which a wave would be acting neither constructively or destructively, in some other alternate format?
- Sun Apr 15, 2018 5:38 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Which mass of oxygen should be used? [ENDORSED]
- Replies: 23
- Views: 3389
Re: Which mass of oxygen should be used? [ENDORSED]
That being said, will utilizing 15.99 grams/mole or 16 grams/mole entail that the TA(s) or test grader understands the differences in sig figs the end answer will hold because of these varying numbers/computations?
- Sun Apr 15, 2018 5:32 pm
- Forum: Empirical & Molecular Formulas
- Topic: Finding the molecular formula [ENDORSED]
- Replies: 5
- Views: 695
Re: Finding the molecular formula [ENDORSED]
If the molar masses for both the empirical and molecular formula are the same, does this conclude with being able to find the molecular formula from the start of the problem, bypassing calculations for the empirical formula?
- Sun Apr 15, 2018 5:28 pm
- Forum: Empirical & Molecular Formulas
- Topic: Compound Order
- Replies: 5
- Views: 1579
Re: Compound Order
Additionally, and this may be overcomplicating matters, how would one expect to organize elements if they are made up of two letters, such as Cr - Chromium, or if one element, out of the ones in the compound has the largest number of atoms?
- Sun Apr 15, 2018 5:20 pm
- Forum: Empirical & Molecular Formulas
- Topic: Molecular to Empirical [ENDORSED]
- Replies: 12
- Views: 1958
Re: Molecular to Empirical [ENDORSED]
In a typical "finding the molecular formula problem," is there a way to discover the molecular formula before the empirical formula, in order to save critical time during an examination?
- Sun Apr 15, 2018 5:15 pm
- Forum: Empirical & Molecular Formulas
- Topic: Empirical and Molecular Formulas [ENDORSED]
- Replies: 4
- Views: 436
Re: Empirical and Molecular Formulas [ENDORSED]
So, in terms of the molecular and empirical formulas being the same, when no simplification can be done, how can we be aware of this occurring in a problem (ie. knowing beforehand if they'll be the same or not) without a diagram?
- Sun Apr 15, 2018 5:09 pm
- Forum: Empirical & Molecular Formulas
- Topic: F.21
- Replies: 5
- Views: 3107
Re: F.21
As an inquiry into discovering the molecular formula of didemnin-A, in the primary steps towards conversion would one have to convert mg units to g towards the end or beginning of calculations? * Would these affect the number of sig figs due to constant conversions?