## Search found 22 matches

Tue Mar 08, 2016 9:51 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Degeneracy
Replies: 1
Views: 364

### Degeneracy

How would you know when to use avogadro's number as the number of particles in a residual entropy/degeneracy problem?
Mon Feb 29, 2016 8:04 pm
Forum: *Alkenes
Topic: Naming
Replies: 3
Views: 647

### Naming

If you have both sec and tert, which comes first (as they both defy the alphabetical order rule)?
Wed Feb 17, 2016 8:30 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Multi-Reactant Reactions
Replies: 1
Views: 297

### Multi-Reactant Reactions

In multi-reactant reactions, such as A+B+C--->P I understand that you have to assume two reactants to be in excess so that they remain constant where the reactant of smaller concentration is studied. So [B]>>[A] and [C]>>[A] means you study [A] However after studying [A] and finding the order, do yo...
Wed Feb 17, 2016 11:52 am
Forum: First Order Reactions
Topic: Lecture 2/8
Replies: 1
Views: 354

### Lecture 2/8

In lecture, Dr. Lavelle indicated that in 1st order reactions, the "slow step" involves just one molecule where in 2nd order reactions, the "slow step" involves two molecules.

What is this "slow step"?
Sat Feb 06, 2016 9:09 pm
Forum: Phase Changes & Related Calculations
Topic: Cv and Cp
Replies: 4
Views: 691

### Cv and Cp

What are all of the Cp and Cv conversions? I know that they are different for monatomic, diatomic, and polyatomic gases, but I'm not positive as to what the actual conversions are.
Tue Feb 02, 2016 9:03 pm
Forum: Balancing Redox Reactions
Topic: Voltage vs. Cell Potential
Replies: 1
Views: 340

### Voltage vs. Cell Potential

Are voltage and cell potential synonymous?
Thu Jan 28, 2016 6:04 pm
Forum: Phase Changes & Related Calculations
Topic: State Property vs. State Function
Replies: 1
Views: 363

### State Property vs. State Function

Is there a difference between state property and state function? Or are these terms used synonymously?
Sun Jan 17, 2016 8:36 pm
Forum: Phase Changes & Related Calculations
Topic: Temperature as a state property?
Replies: 2
Views: 438

### Re: Temperature as a state property?

TEMPERATURE is a state property, HEAT is not. For this, you have to remember that temperature and heat are two completely different things. Temperature: indicates random motion of particles Heat: the transfer of energy due to a difference in temperature. (These came from page 22 of the Thermochemist...
Wed Jan 13, 2016 9:36 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Change in System at Equilibrium
Replies: 1
Views: 359

### Change in System at Equilibrium

In lecture, it was said that generally volume changed in a system at equilibrium is extremely small, so we would use dV instead of deltaV. Why is this?

Also are there any other minimal changes in systems at equilibrium that require the derivative to solve?
Sat Jan 09, 2016 1:14 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard State
Replies: 1
Views: 1141

### Standard State

How can you tell when an element is in its most stable state? And is that considered its standard state?
Sun Nov 29, 2015 7:25 pm
Forum: Conjugate Acids & Bases
Topic: Strong vs. Weak Acids and Bases
Replies: 2
Views: 521

### Strong vs. Weak Acids and Bases

How would you be able to tell whether an acid or a base is strong or weak by just looking at its chemical formula?
Wed Nov 25, 2015 12:10 pm
Forum: Bronsted Acids & Bases
Topic: Strong/weak acids and bases
Replies: 1
Views: 520

### Strong/weak acids and bases

How can you tell whether an acid or base is strong or weak in a reaction when using a double-headed arrow (representing equilibrium) vs. an arrow indicating only one direction?
Thu Nov 12, 2015 1:38 am
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Pressure
Replies: 5
Views: 796

### Re: Pressure

K for partial pressures in gases is partially manipulated by temperature, but K for molar concentrations is not (that's just mol/Liter). The only way K affects equilibrium shifts is when the partial pressures/molar concentrations for products are drastically higher than those of reactants or vice ve...
Thu Nov 12, 2015 1:30 am
Forum: Equilibrium Constants & Calculating Concentrations
Replies: 1
Views: 267

If both results from the quadratic equation are positive, how do you know which to use to substitute for 'X'?
Thu Nov 12, 2015 1:28 am
Forum: Equilibrium Constants & Calculating Concentrations
Replies: 2
Views: 819

If both results from the quadratic equation are positive, how do you know which to use to substitute for 'X'?
Mon Nov 02, 2015 4:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 1
Views: 391

### Ligands

What exactly is a ligand? Is it just an atom that branches off a transition metal?
Sat Oct 31, 2015 12:26 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bond Order
Replies: 3
Views: 1265

### Bond Order

Can bond order ever be negative? Will there be times when there are more electrons in the anti bonding region than in the bonding region?
Mon Oct 26, 2015 8:30 pm
Forum: Ionic & Covalent Bonds
Topic: Cations and Anions [ENDORSED]
Replies: 12
Views: 1297

### Cations and Anions[ENDORSED]

What's the difference between a cation and an anion? I'm having trouble differentiating the two.
Sun Oct 18, 2015 9:54 pm
Forum: Resonance Structures
Topic: Formal Charges
Replies: 3
Views: 629

### Formal Charges

Are we ever going to have to find the total formal charge of a compound? Or just the individual formal charges of each bond?
Wed Oct 14, 2015 5:28 pm
Forum: Trends in The Periodic Table
Replies: 1
Views: 439

What is the difference between atomic, covalent, and ionic radii? What importance do they have in periodic trends?
Fri Oct 09, 2015 6:45 pm
Forum: *Shrodinger Equation
Topic: Wave Function
Replies: 3
Views: 661

### Wave Function

I understand that wave function and orbitals are essentially the same thing, but WHY/how? In what way is the wave function the same thing as an orbital?
Fri Oct 02, 2015 6:21 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Energy Levels
Replies: 1
Views: 314

### Energy Levels

I understand that if the energy from a light sample doesn't quite reach the energy needed to excite an electron from one n level to the next, the electron will not absorb any energy, however if there is enough energy provided to excite an electron from an n=1 level to an n=2 level but not quite an n...