CH3COOH --> CH3CONH2?
Well, the compound does gain a Hydrogen, and if that is true, then the compound must be a base. However, we also see that the compound loses the OH- and gains a NH2-, further proving that CH3COOH is a base.
Search found 30 matches
- Wed Dec 05, 2018 9:25 am
- Forum: Bronsted Acids & Bases
- Topic: Proton transfer
- Replies: 1
- Views: 172
- Wed Dec 05, 2018 9:20 am
- Forum: Bronsted Acids & Bases
- Topic: How to identify Acids/Bases
- Replies: 4
- Views: 236
Re: How to identify Acids/Bases
If you are given a compound, identify the compound that loses an H+. For example, if in the reaction h3o+ becomes h2o, then you know that it lost a H+, or donated that. that compound will be an acid.
- Wed Dec 05, 2018 9:17 am
- Forum: Lewis Acids & Bases
- Topic: Identifying the acid and base
- Replies: 3
- Views: 189
Re: Identifying the acid and base
What is the acid and base in these reactions? a. CH3NH2 (aq) + H30+ (aq) ---> CH3NH3+ (aq) + H20 (l) b. CH3NH2 (aq) + CH3COOH (aq) ---> CH3NH3+ (aq) + CH3CO2- (aq) c. 2 HI (aq) + Ca0 (s) ---> CaI2 (aq) + H20 (l) acids are the compounds that donate an H+, so: 1. acid - H3O+ 2. CH3COOH 3.HI the bases ...
- Fri Nov 30, 2018 3:55 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: H-Bonding and Dipole Dipole
- Replies: 2
- Views: 156
Re: H-Bonding and Dipole Dipole
when hydrogen bonding exists, dipole dipole exists. However, the vice versa is not true, as if dipole dipole exists, it may not be hydrogen bonding as H needs to be attracted to N,O, or F.
- Fri Nov 30, 2018 3:50 pm
- Forum: Hybridization
- Topic: 2s or s?
- Replies: 7
- Views: 226
Re: 2s or s?
if a question asks what is the hybridization around the central atom, does it need a coefficient to specify which energy level?
- Fri Nov 30, 2018 3:48 pm
- Forum: Bronsted Acids & Bases
- Topic: Bronsted vs Lewis
- Replies: 3
- Views: 121
Re: Bronsted vs Lewis
If an acid is an electron acceptor, whilst giving away the H+ (which is essentially a proton), how does it take in another electron? or does the electron already exist to the acid?
- Fri Nov 23, 2018 8:05 am
- Forum: Hybridization
- Topic: Writing Pi Bonds
- Replies: 2
- Views: 149
Re: Writing Pi Bonds
The pi bond is not the entire double bond, just the single bond on top of the preexisting sigma bond. For example, a double bond consists of one sigma bond (C2sp2) and a pi bond (C2p).
- Mon Nov 19, 2018 11:27 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pair distortion
- Replies: 2
- Views: 138
Re: Lone Pair distortion
A lone pair takes up more space in terms of it's electron cloud or density, so it'll push the other bonds closer together, resulting in a lower bond angle.
- Mon Nov 19, 2018 11:20 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Double bonds
- Replies: 8
- Views: 280
Double bonds
Is there a way to dictate double bonds in our VSEPR drawings? If we have to draw in lone pairs, is there anything else we need to do as well to closer match the elements depicted by lewis structures?
- Mon Nov 12, 2018 4:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Dipoles
- Replies: 5
- Views: 261
Re: Dipoles
Essentially you want to determine if the molecule is polar or non polar, and this will allow you to figure out if there will be dipoles. Using electronegativity values, if u calculate the difference between values and find that it is 0.5 or greater, then the molecule will be polar and therefore have...
- Mon Nov 12, 2018 4:15 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: 6.1 Sixth Edition Intermolecular Forces
- Replies: 2
- Views: 1445
Re: 6.1 Sixth Edition Intermolecular Forces
CBr4 would have a VSEPR shape that is tetrahedral, and since the difference between carbon and bromine electronegativity values are 0.3 (2.8(br)-2.5(c)), the molecule is non-polar. Therefore, the only IMFs that would be present in a non-polar molecule are london dispersion forces.
- Mon Nov 12, 2018 4:13 pm
- Forum: Dipole Moments
- Topic: Dipole Moments and Polar Molecules
- Replies: 2
- Views: 155
Re: Dipole Moments and Polar Molecules
You find the difference in electronegativity values between the elements, and if the difference is greater than 0.5 than the molecule will be polar towards the more negative atom. However, if all atoms point towards - for example - a central atom, then the molecule is non-polar as there is no overal...
- Wed Nov 07, 2018 9:13 am
- Forum: Electronegativity
- Topic: Electronegativity calculation
- Replies: 4
- Views: 226
Re: Electronegativity calculation
To calculate electronegativity, you simply take the difference between the two elements. And using these values, you can see if the compound is polar or nonpolar, as well as having possibly ionic characters or covalent.
- Wed Nov 07, 2018 9:09 am
- Forum: Ionic & Covalent Bonds
- Topic: Covalent attributes [ENDORSED]
- Replies: 2
- Views: 132
Covalent attributes [ENDORSED]
Hello! Could someone explain why going down a family will increase covalent attributes? I think where I get confused is that since the atomic radius is increasing down a family, so that means it'll hold on to the cation with less force, and therefore act like an ionic compound and be more soluble. t...
- Wed Nov 07, 2018 9:03 am
- Forum: Trends in The Periodic Table
- Topic: electron affinity
- Replies: 2
- Views: 359
Re: electron affinity
I would assume no, as they already have filled orbitals.
- Mon Oct 29, 2018 11:54 am
- Forum: Ionic & Covalent Bonds
- Topic: Formal Charges
- Replies: 3
- Views: 160
Formal Charges
Do the formal charges of each individual element of an ion always add up to the overall charge of the ion?
- Mon Oct 29, 2018 11:48 am
- Forum: Ionic & Covalent Bonds
- Topic: 2B.7
- Replies: 3
- Views: 237
Re: 2B.7
Some elements can have expanded octets, as explained in lecture on 10/29. Those elements that are in the third row can have expanded octets because the now have a d-orbital as well.
- Mon Oct 29, 2018 11:44 am
- Forum: Quantum Numbers and The H-Atom
- Topic: Finding number of elements that have given quantum numbers
- Replies: 1
- Views: 133
Re: Finding number of elements that have given quantum numbers
id just locate the fifth row of the periodic table, and then focus on the l value and which orbital it correlates to. For your example, it would be the p orbital, which means only 6 elements would have n=5 and l=1, those elements in the p block of the 5th row
- Tue Oct 23, 2018 5:36 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: When to double the parameter to get delta v
- Replies: 3
- Views: 366
Re: When to double the parameter to get delta v
if a question says the speed is 3.24 +/- 0.06 m/s, would delta V be 0.12 m/s?
- Tue Oct 23, 2018 5:31 pm
- Forum: Properties of Light
- Topic: EM Energy Spectrum
- Replies: 4
- Views: 247
Re: EM Energy Spectrum
pretty sure the values of frequencies will be given to us in the problem. Most problems state v= blank so i dont see why it wouldnt for those as well.
- Tue Oct 23, 2018 5:28 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Angular Momentum Quantum Numbers
- Replies: 3
- Views: 184
Re: Angular Momentum Quantum Numbers
quantum number for l just describes the shape. It isnt necessarily always going to be l=n-1. For example, the third energy level has s, p, and d orbitals, meaning you can have l=0,1 or 2 for which electron you are describing.
- Wed Oct 17, 2018 2:28 pm
- Forum: *Shrodinger Equation
- Topic: Using the Equation
- Replies: 2
- Views: 145
Re: Using the Equation
The equation gives us the probability of finding an electron at a certain location/position, at an orbital or a cloud. I heard we won't be needing to know how to use the formula, just to understand its purpose.
- Tue Oct 16, 2018 10:04 pm
- Forum: Ionic & Covalent Bonds
- Topic: Electron Configuration of Cations
- Replies: 8
- Views: 390
Re: Electron Configuration of Cations
It would just be the electron represented on the most right. for example, element (II) would have s2p5 and element(I) would be s2p4.
- Tue Oct 16, 2018 10:00 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Indeterminacy vs. Uncertainty?
- Replies: 4
- Views: 194
Re: Indeterminacy vs. Uncertainty?
They're interchangeable terms, but i think Lavelle said something about uncertainty being used too often, and that indeterminacy is used because it is less used, if that makes any sense. However, im sure it doesnt make a difference what you use in terms of vocabulary or tests/quizzes.
- Fri Oct 12, 2018 1:37 pm
- Forum: DeBroglie Equation
- Topic: Measurable wavelengths
- Replies: 3
- Views: 98
Re: Measurable wavelengths
In my 10-11 lecture, he said when the value is x10^-18 or more, someone asked that question too in my class. However, not sure what makes that value suddenly detectable as compared to other values, like if it is a specific threshold or boundary of a value.
- Fri Oct 12, 2018 1:35 pm
- Forum: Einstein Equation
- Topic: Delta E values
- Replies: 2
- Views: 159
Re: Delta E values
Yes, when the original calculation gives a negative value it just signifies that there was a negative change overall, but you can't have negative energy. The negative sign is just there for conceptual understanding.
- Fri Oct 12, 2018 1:32 pm
- Forum: Significant Figures
- Topic: Calculators
- Replies: 20
- Views: 1011
Re: Calculators
I use a TI-30X and it works wonders. Also heard a few of the Casio ones have a fraction button that would help you organize or visualize your work better!
- Tue Oct 02, 2018 8:59 pm
- Forum: Balancing Chemical Reactions
- Topic: Problem H. 11
- Replies: 3
- Views: 89
Re: Problem H. 11
the coefficients are 0,4,3,4
- Tue Oct 02, 2018 8:51 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Confused about molarity concept
- Replies: 4
- Views: 274
Re: Confused about molarity concept
i think it means you need to mix in 9.8ml (the answer) of the 0.0380M KmNO4 into say a volumetric flask, then fill it up to 0.250L with water, and that will create the 1.50x10^-3M solution of KmNO4. At least I think that is how it can be interpreted, open to other thoughts
- Tue Oct 02, 2018 8:47 pm
- Forum: SI Units, Unit Conversions
- Topic: Audio-Visual Focus-Topics, Assessments & Surveys
- Replies: 11
- Views: 587
Re: Audio-Visual Focus-Topics, Assessments & Surveys
Currently doing the modules, and for the ones in which topics were covered in class, the problems he does are the same as the ones from class. Seems useful for reviewing for tests or if you miss class, or want to review prior to class though