When is an OH group on an organic molecule named as a -hydroxy- and when is it named as an -ol?
A specific example of this can be seen on Winter 2015 Final Question 9B where in 1,3,4,5,6-pentahydroxy-2-hexanone hydroxy is also an -OH group.
Search found 22 matches
- Sat Mar 18, 2017 8:44 pm
- Forum: *Alcohols
- Topic: OH Group Hydroxy vs. Alcohol
- Replies: 1
- Views: 1678
- Sun Mar 12, 2017 6:39 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: The Rate Limiting Step
- Replies: 1
- Views: 542
The Rate Limiting Step
If the first step is the rate limiting step and it is a reaction that goes in the forward and reverse direction, why isn't the overall reaction rate the forward reaction rate over the reverse reaction rate in the rate limiting step?
- Sun Mar 05, 2017 1:01 pm
- Forum: *Electrophiles
- Topic: CH3Cl
- Replies: 2
- Views: 2192
CH3Cl
Why is CH3Cl an electrophile if Cl is full of lone pairs?
Is it only the carbon region that is an electrophile?
Does that make CH3Cl both a nucleophile and an electrophile?
Thanks!
Is it only the carbon region that is an electrophile?
Does that make CH3Cl both a nucleophile and an electrophile?
Thanks!
- Sun Feb 26, 2017 5:34 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008689
Re: Post All Chemistry Jokes Here
Q: What do you do with a sick chemist?
A: First you try to helium, then you try to curium, but if that fails, then you have to barium.
A: First you try to helium, then you try to curium, but if that fails, then you have to barium.
- Tue Feb 14, 2017 7:53 pm
- Forum: Balancing Redox Reactions
- Topic: HW 14.5
- Replies: 2
- Views: 545
HW 14.5
Can someone please explain why the half reaction for oxidation of the reaction in this problem is O3 --> O2 when both the oxidation charges of these molecules are 0? Doesn't oxidation need to have a loss of electrons from the reactant to product?
- Sun Feb 12, 2017 6:34 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Change in entropy when temperature changes
- Replies: 1
- Views: 318
Change in entropy when temperature changes
For some textbook problems, the change in entropy when temperature changes uses the equation S=nCln(T2/T1) and for some, the equation S=nRln(T2/T1) is used. How do you know which equation to use under certain conditions?
- Fri Feb 03, 2017 10:36 am
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Entropy
- Replies: 2
- Views: 606
Entropy
Is there anyway to obtain the change in entropy when only change in enthalpy is known? Is there a derivation in which this would be possible, or do you just assume change in enthalpy acts like a heat (q)?
- Mon Jan 30, 2017 12:20 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Homework 8.41
- Replies: 1
- Views: 466
Homework 8.41
Homework Question 8.41 asks for a the final temperature when an ice cube has been placed in water at a certain temperature. Using the correct equations for heat and enthalpy, I am continuously getting the same answer for the final temperature: 33 degrees Celsius. However, the solutions manual says t...
- Sun Jan 22, 2017 9:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008689
Re: Post All Chemistry Jokes Here
What did the policeman say to the atom?
I've got my ion you!
I've got my ion you!
- Sun Jan 15, 2017 5:37 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bruincast
- Replies: 1
- Views: 430
Bruincast
Hi,
I wanted to review Lecture 3 on bruincast. I was able to do it on my computer, but I was wondering if the iphone version wasn't working for anyone else, or if it'll be working anytime soon?
Thank you.
I wanted to review Lecture 3 on bruincast. I was able to do it on my computer, but I was wondering if the iphone version wasn't working for anyone else, or if it'll be working anytime soon?
Thank you.
- Thu Dec 01, 2016 3:17 pm
- Forum: *Titrations & Titration Calculations
- Topic: Homework 13.23
- Replies: 1
- Views: 489
Homework 13.23
For question 13.23, how do you know that you're only supposed to add 30 mL of HCl to calculate final pH since there was no indication of when to stop the titration in the problem?
- Mon Nov 28, 2016 6:20 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: HW 11.67 Reasoning
- Replies: 2
- Views: 639
HW 11.67 Reasoning
2HCl --> H2 + Cl2
Pressures in order of HCl, H2, and Cl2 are 2.0, 1.0, 3.0. Why do you have to push the reaction as far to the left as possible? And how do you do this? Why can't you first find Q and use that to determine which eay the reaction moves when using ICE?
Pressures in order of HCl, H2, and Cl2 are 2.0, 1.0, 3.0. Why do you have to push the reaction as far to the left as possible? And how do you do this? Why can't you first find Q and use that to determine which eay the reaction moves when using ICE?
- Wed Nov 23, 2016 9:24 pm
- Forum: Polyprotic Acids & Bases
- Topic: Polyprotic Acids and strength
- Replies: 2
- Views: 902
Polyprotic Acids and strength
Are polyprotic acids always weak acids, or are there any examples of strong polyprotic acids?
- Sun Nov 20, 2016 2:15 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Textbook 11.7 (a)
- Replies: 1
- Views: 388
Textbook 11.7 (a)
For problem 11.3 in the textbook, how can you determine that it is Flask 3 that is at equilibrium without any value of K?
- Wed Nov 09, 2016 6:10 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Molecular Orbital Diagram for HF [ENDORSED]
- Replies: 1
- Views: 762
Molecular Orbital Diagram for HF [ENDORSED]
How do you draw the molecular orbital diagram for HF? I tried looking up the answer but was confused by the energy states for H.
- Fri Nov 04, 2016 2:23 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Order Conceptual Question
- Replies: 1
- Views: 436
Bond Order Conceptual Question
What is the significance of finding bond order when you have already drawn a Lewis Structure? In other words, what can bond order tell you about the strength of a bond that the Lewis structure can't show you?
- Sun Oct 30, 2016 10:03 pm
- Forum: Hybridization
- Topic: Conceptual question
- Replies: 1
- Views: 416
Conceptual question
When do we know if an electron will be promoted or not? And also, how do you know when promotion will lead to a lower energy state for the atom or not?
- Mon Oct 17, 2016 10:20 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Energy in the Atomic Spectroscopy
- Replies: 2
- Views: 603
Re: Energy in the Atomic Spectroscopy
Thank you for your help!
- Mon Oct 17, 2016 10:14 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Chapter 2 Homework #15
- Replies: 1
- Views: 1283
Chapter 2 Homework #15
How many (a) nodal planes, (b) radial nodes are there in a 3p-orbital? Focusing on part b, in the textbook, number of radial nodes = n - l -1. For this problem, using the 3p orbital, I concluded that n = 3, due to the shell of the electron and l =1, due to the fact that this is the p orbital. These ...
- Sun Oct 16, 2016 3:06 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Energy in the Atomic Spectroscopy
- Replies: 2
- Views: 603
Energy in the Atomic Spectroscopy
In the equation En= -hR/n^2, does En represent the potential energy of the photon? If not, what type of energy is this equation alone solving for?
- Sun Oct 09, 2016 3:16 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Chapter 1, Problem #15
- Replies: 1
- Views: 448
Chapter 1, Problem #15
I understand that #15 in the textbook is supposed to be solved using Rydberg's Equation; however, is it possible to use the equation we covered in class for an H-atom (En = -hR/n^2) in order to solve it? And if not, is Rydberg's Equation given to us on quizzes or tests?
- Fri Sep 30, 2016 3:02 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: The Atomic Spectroscopy Experiment
- Replies: 1
- Views: 417
The Atomic Spectroscopy Experiment
In the setup of an Atomic Spectroscopy experiment, does the detector read the wavelengths of light absorbed and emitted or the frequencies of light absorbed and emitted? Also, why does it matter which one is detected if you can use the equation c= frequency x wavelength in order to solve for the mis...