## Search found 10 matches

Thu Mar 10, 2016 11:25 pm
Forum: *Alcohols
Topic: Naming
Replies: 1
Views: 414

### Naming

Is methyl ethanol another name for 2-propanol? Since the common name is different, is there anything that makes these two names different if the structures would come out the same, or is the first name just not used?
Thu Mar 03, 2016 1:32 am
Forum: *Nucleophiles
Topic: Ambident Nucleophiles
Replies: 2
Views: 603

### Ambident Nucleophiles

Can you tell if a nucleophile is ambident if it has different lewis structures?
Thu Mar 03, 2016 1:24 am
Forum: *Electrophiles
Topic: Ambident
Replies: 1
Views: 398

### Ambident

Can electrophiles also be ambident? What makes them similar or different from nucleophiles that would allow both or only nucleophiles to be ambident?
Thu Feb 18, 2016 1:53 am
Forum: First Order Reactions
Topic: Half Life
Replies: 1
Views: 432

### Half Life

Why is the half life for any first order reaction not affected by the initial concentration [A]? Does k, the rate/decay constant, vary from reaction to reaction making the half life of different first order reactions have different half lives depending on what is reacting and being produced?
Thu Feb 18, 2016 1:41 am
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Overall Rate
Replies: 1
Views: 341

### Overall Rate

The slowest intermediate rate is the one that determines the overall rate. In the course reader example we could tell which intermediate rate, step 1 or step 2, was the determining rate because the reactant of only one was the reactant that was in the overall reaction and thus the rate that agreed w...
Thu Feb 18, 2016 1:17 am
Forum: General Rate Laws
Topic: Deriving Rate Laws
Replies: 1
Views: 360

### Deriving Rate Laws

If rate=-(1/a)(d[A]/dt), what happens to a and thus the (1/a) term while separating the variables before integrating to get the order rate law?
Thu Feb 18, 2016 1:07 am
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Control of the Reaction
Replies: 2
Views: 416

### Control of the Reaction

How do you tell whether kinetics or thermodynamics control the reaction? Kinetics is analyzed by the rate of the reaction and thermodynamics by delta G, but how do you know which is in control?
Fri Jan 29, 2016 11:13 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Heat in an isothermal reaction
Replies: 2
Views: 592

### Heat in an isothermal reaction

Because q=nC(Tf-Ti), when the reaction is isothermal, is heat zero? If this is the case, is the change in the internal energy then equal to work?
Thu Jan 28, 2016 4:45 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Bond Enthalpies
Replies: 1
Views: 459

### Bond Enthalpies

What is the difference in using mean bond enthalpies and bond enthalpies of diatomic molecules? For example, the O-O bond has a mean bond enthalpy of 157 kJ/mol but is 496 kJ/mol under bond enthalpies of diatomic molecules. Is it in regards to the bond type because O2 has a double bond? If so will t...
Tue Jan 12, 2016 9:00 pm
Forum: Phase Changes & Related Calculations
Topic: Reversible and Irreversible expansion
Replies: 1
Views: 239

### Reversible and Irreversible expansion

What makes an expansion process reversible or irreversible? Does the expansion being isothermal matter in both or just one of those processes, and if so how?