If given this formula: H2SO4(aq) + H2O (l) → HSO4- (aq) + H3O+ (aq)
H2SO4(aq)= bronsted acid
H2O= bronstead base
HSO4- = conjugate base
H3O= conjugate acid
Search found 31 matches
- Sat Dec 08, 2018 11:27 pm
- Forum: Conjugate Acids & Bases
- Topic: Can someone check if I'm right
- Replies: 2
- Views: 626
- Sat Dec 08, 2018 11:17 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Conjugate?
- Replies: 5
- Views: 850
Re: Conjugate?
In the reaction Ba(OH)2 + H2O = Ba + 2OH + H2O, the conjugate base is H2O and the conjugate acid is OH. Whatever was the base before the reaction becomes the conjugate acid and whatever was the acid before the problem becomes the conjugate base. Thanks for the explanation, I kept confusing which wa...
- Sat Dec 08, 2018 11:01 pm
- Forum: Conjugate Acids & Bases
- Topic: HCO3- an acid or base
- Replies: 2
- Views: 2146
HCO3- an acid or base
How do we know if HCO3- is a base or an acid. For example if it reacts with water will it be considered the acid?
- Sat Dec 08, 2018 10:46 pm
- Forum: Naming
- Topic: Regarding the test... [ENDORSED]
- Replies: 12
- Views: 5832
Re: Regarding the test... [ENDORSED]
do we have to know the actual chemical composition of en or can we just memorize that en pairs as a bidentate
- Sat Dec 08, 2018 8:47 pm
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
- Replies: 118
- Views: 21823
Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
On question 21, can someone explain why Fe has an oxidation state of +2? I get that this is because of the nitrogens, but how do the nitrogens come to have a charge of -2? I was trying to calculate the formal charge but kept getting a positive charge on the nitrogens, not a negative charge. This is...
- Sat Dec 08, 2018 8:34 pm
- Forum: Biological Examples
- Topic: Myoglobin and Hemoglobin
- Replies: 1
- Views: 421
Re: Myoglobin and Hemoglobin
According to the UA's answer key, 4.
- Sat Dec 08, 2018 8:33 pm
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
- Replies: 118
- Views: 21823
Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
What is a porphyrin ligand and will we be asked about ligands like this on the test?
- Sat Dec 08, 2018 3:19 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Ordering Polarizability and Polarizing Power
- Replies: 4
- Views: 2090
Re: Ordering Polarizability and Polarizing Power
Then for the anions why isn’t the order Cl-, S-2, P-3, and I -? I understand That I has more shells therefore has more shielding, but since P,S, and Cl are in the same period and have the same number of shells then wouldn’t the ones with a higher number electrons and lower number of protons have mor...
- Sat Dec 08, 2018 12:14 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: Dispersion and Mass?
- Replies: 1
- Views: 433
Dispersion and Mass?
So I was doing some review and ranked the molecules in order of strongest interaction, but my answer was backward. From weakest to strongest the answer was:
H2S, H2Se, and H2Te. I figured that this was because dispersion forces increase with mass. Can someone verify if this is the correct reasoning?
H2S, H2Se, and H2Te. I figured that this was because dispersion forces increase with mass. Can someone verify if this is the correct reasoning?
- Sat Dec 08, 2018 11:05 am
- Forum: Lewis Acids & Bases
- Topic: Trends of Acids and Bases
- Replies: 2
- Views: 346
Trends of Acids and Bases
Are acids with an A-H bond stronger than acids with an AO-H bond?
- Sat Dec 08, 2018 10:21 am
- Forum: Bronsted Acids & Bases
- Topic: List of strong/weak acids/bases
- Replies: 3
- Views: 485
Re: List of strong/weak acids/bases
Thank you so much!
- Sat Dec 08, 2018 10:18 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ka and Kb on Final
- Replies: 9
- Views: 2839
Re: Ka and Kb on Final
Claudia Luong 3G wrote:We do not need to know these for the final. Just in case, I think it would be good to at least keep in mind that pKa is -log(Ka) and that the bigger the value of Ka is the stronger the acid.
Does this also mean the bigger the value of Kb the stronger the base?
- Sat Dec 08, 2018 10:00 am
- Forum: Bronsted Acids & Bases
- Topic: Arrhenius Acids and Bases
- Replies: 1
- Views: 293
Arrhenius Acids and Bases
Why is NH3 neither an Arrhenius acid or base and why is CH3COOH an Arrhenius acid?
- Fri Dec 07, 2018 12:25 pm
- Forum: Naming
- Topic: Coordination Compounds on the Final
- Replies: 2
- Views: 330
Coordination Compounds on the Final
For the final, are we going to have to memorize the neutral and anionic ligands to name molecules and know its charge, or will they be given?
- Fri Dec 07, 2018 11:58 am
- Forum: Bronsted Acids & Bases
- Topic: Question on Acidity
- Replies: 1
- Views: 260
Question on Acidity
If acidity increases with both electronegativity and size, which one takes precedence. Like if we have molecules like H2Se and HF, which one would be more acidic?
- Fri Dec 07, 2018 11:49 am
- Forum: Conjugate Acids & Bases
- Topic: Inductive Effect
- Replies: 5
- Views: 588
Re: Inductive Effect
So we don't need to know inductive effect at all, just the concept mentioned above? Because my TA mentioned it, but I was a bit confused by his explanation.
- Thu Dec 06, 2018 9:44 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: ordering
- Replies: 2
- Views: 604
Re: ordering
So if radii takes presedence over charge then when ordering cations (Li+, Ca2+, Cs+,Ba2+) from least to most polarizing power and anions (I-, Cl-, S2-, P3-) from least to most polarizable, would it be:
Least---------> Most
Cs+, Ba2+,Ca2+,Li+
Cl- S2-,P3-, I -
Least---------> Most
Cs+, Ba2+,Ca2+,Li+
Cl- S2-,P3-, I -
- Thu Dec 06, 2018 8:24 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Ordering Polarizability and Polarizing Power
- Replies: 4
- Views: 2090
Re: Ordering Polarizability and Polarizing Power
Can someone please explain why this is the order?
- Thu Dec 06, 2018 8:18 am
- Forum: Administrative Questions and Class Announcements
- Topic: Practice/Final Studying
- Replies: 2
- Views: 495
Re: Practice/Final Studying
I don't, but when I was talking to my TA for the class he said the best way to study is by doing practice problems, so you may want to review some of Karen's worksheets or the practice for the final wksht you'll get when you look up the word "churro" in chemistry community. I hope this hel...
- Thu Dec 06, 2018 8:11 am
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
- Replies: 118
- Views: 21823
Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Thank you! This is really appreciated.
- Tue Dec 04, 2018 10:03 pm
- Forum: Bronsted Acids & Bases
- Topic: Homework Fundamentals J.9
- Replies: 1
- Views: 351
Homework Fundamentals J.9
Sixth Edition: J.9. Hydrochloric acid is a strong acid. Which of the following images best represents a solution of hydrochloric acid? The green spheres represent chlorine and the gray spheres, hydrogen. Why is the answer b? (An image where the spheres of chlorine and hydrogen atoms are not connecte...
- Tue Dec 04, 2018 12:57 pm
- Forum: Lewis Acids & Bases
- Topic: How to Identify Lewis acid and Bases
- Replies: 4
- Views: 1473
How to Identify Lewis acid and Bases
In reviewing for the final I'm trying to figure out easy ways to remember concepts. So can somebody correct me on whether or not the following concept is correct? When identifying Lewis acids and bases, are the acids typically the molecules without lone pairs on the central atoms while bases are mol...
- Tue Dec 04, 2018 12:44 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configurations for ions
- Replies: 2
- Views: 407
Electron Configurations for ions
What is the most likely charge for the ions formed by each of the following elements? Why?
a) S
b)Cd
I how to do the problems for example S would become S^-2 and Cd would become Cd^+2, but I don't know how to explain this concept, so how would you explain it?
a) S
b)Cd
I how to do the problems for example S would become S^-2 and Cd would become Cd^+2, but I don't know how to explain this concept, so how would you explain it?
- Wed Nov 28, 2018 12:09 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge vs Partial charge
- Replies: 4
- Views: 2300
Formal Charge vs Partial charge
What is the difference between a formal charge and a partial charge and when should you use each?
- Tue Nov 27, 2018 2:18 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Chapter 4 Sixth Edition Number 11
- Replies: 1
- Views: 214
Chapter 4 Sixth Edition Number 11
Write the Lewis structure, VSEPR formula, molecular shape, and bond angles for each of the following species: (a) I3-
Why does the central iodine atom have 3 lone pairs instead of forming two double bonds with the other two Iodine atoms since they can all break the octet rule?
Why does the central iodine atom have 3 lone pairs instead of forming two double bonds with the other two Iodine atoms since they can all break the octet rule?
- Tue Nov 27, 2018 8:52 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: General question on Molecular Shape
- Replies: 2
- Views: 538
General question on Molecular Shape
Generally speaking, when determining the shape of a molecule how can you tell which atoms are going to fall in the same plane?
- Tue Nov 27, 2018 8:40 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecule Shape for HCN
- Replies: 2
- Views: 1460
Molecule Shape for HCN
Just for clarification, is the molecule HCN linear because it has a triple bond on the side with a lone pair? Because I though molecules usually slightly bend due to lone pairs.
- Tue Oct 30, 2018 12:42 am
- Forum: Ionic & Covalent Bonds
- Topic: Number of Unpaired Electrons
- Replies: 3
- Views: 707
Number of Unpaired Electrons
When determining the number of unpaired electrons in an atom do we look at whether electrons in the entire valence shell (n=3,n=4, etc) is full or not or whether electrons in a particular orbital (3s, 4p, 5f, etc) is full or not?
- Fri Oct 05, 2018 12:18 am
- Forum: Limiting Reactant Calculations
- Topic: Percent Yield
- Replies: 5
- Views: 975
Re: Percent Yield
Can someone explain what I'm doing wrong? I keep getting 76.5 instead of 76.6. I converted the 35g of NH3 to grams of N2H4 and divided that by the actual yield and my answer continuously comes out to 76.50%
- Fri Oct 05, 2018 12:12 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Homework Question G5
- Replies: 3
- Views: 220
Re: Homework Question G5
Because the problem started out in ml do we have to convert our answers back to ml or would we be fine keeping our final answer in L?
- Fri Oct 05, 2018 12:08 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Problem G5
- Replies: 8
- Views: 757
Re: Problem G5
If we have another way to do the problem, but come sup with the same answer, will the professor deduct points? I completed the problem by finding the molarity, but I didn't use the m(1)v(1)=m(2)v(2) formula.