Search found 22 matches

by vincesmetona_3I
Fri Mar 11, 2016 3:25 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Torsional vs Steric Strain
Replies: 1
Views: 347

Torsional vs Steric Strain

What is the difference between torsional and steric strain?
by vincesmetona_3I
Mon Feb 29, 2016 4:35 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Important Reaction Mechanisms
Replies: 1
Views: 298

Important Reaction Mechanisms

Which reaction mechanisms do we need to know step by step besides electrophilic addition?
by vincesmetona_3I
Sun Feb 28, 2016 3:40 pm
Forum: *Alkanes
Topic: IUPAC vs Common Name
Replies: 1
Views: 252

IUPAC vs Common Name

When should we use IUPAC vs the common name when asked to name a structure?
by vincesmetona_3I
Sun Feb 21, 2016 4:24 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: A as pre-exponential factor
Replies: 2
Views: 434

A as pre-exponential factor

Must the value of 'A' always given to us? And if not do we assume it is constant at different activation energies, temp., etc.?
Thanks
by vincesmetona_3I
Thu Feb 18, 2016 6:59 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Microscopic Reversibility
Replies: 1
Views: 341

Re: Microscopic Reversibility

Microscopic reversibility is when one assumes that the reaction has the same intermediates, or same pathway, in the forward and reverse directions. We assume this when using k/k`=[C][D]/[A][B]=K
by vincesmetona_3I
Sun Feb 14, 2016 11:31 am
Forum: Second Order Reactions
Topic: Slope of a Second Order Reaction Plot
Replies: 1
Views: 1137

Slope of a Second Order Reaction Plot

Why is it that the slope of a second order plot is negative? It seems to me that it should be negative because the concentration of reactants decrease with time.
by vincesmetona_3I
Sat Feb 06, 2016 2:16 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Latent heat of Melting/Boiling
Replies: 1
Views: 192

Latent heat of Melting/Boiling

What is meant by latent heat of melting or latent heat of boiling? Is it enthalpy?
Thanks
by vincesmetona_3I
Wed Jan 27, 2016 3:49 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: When is deltaU equal to 0?
Replies: 1
Views: 298

When is deltaU equal to 0?

How can we determine when deltaU equals 0 after reading the question?
by vincesmetona_3I
Fri Jan 22, 2016 12:35 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: HW 9.25 Calculation is too complex for my calculator?
Replies: 1
Views: 301

HW 9.25 Calculation is too complex for my calculator?

My calculator responds with 'overflow error' when i take ln6^6.02x10^23. Is there another way to get the correct answer?
by vincesmetona_3I
Sun Jan 17, 2016 1:05 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Adiabatic vs. Isolated
Replies: 1
Views: 400

Adiabatic vs. Isolated

Are adiabatic and isolated systems the same or is there a distinction?
Thanks
by vincesmetona_3I
Fri Jan 08, 2016 2:31 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Breaking and Forming Bonds
Replies: 1
Views: 254

Breaking and Forming Bonds

Is breaking bonds endothermic or exothermic? And is forming bonds endothermic or exothermic?
Thanks
by vincesmetona_3I
Sun Nov 29, 2015 11:37 am
Forum: Lewis Acids & Bases
Topic: How to determine Lewis Acids and Bases
Replies: 1
Views: 342

How to determine Lewis Acids and Bases

How can we determine if a species is a Lewis Acid or a Lewis Base? Is it dependent on the reaction or will particular species always be either a Lewis Acid/Base?
Thanks
by vincesmetona_3I
Tue Nov 17, 2015 12:05 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Concentration vs. Amount
Replies: 1
Views: 866

Concentration vs. Amount

If a question asks for the effect of increasing/decreasing the concentration of a reactant/product, is this the same as asking for the effect of increasing/decreasing the amount of that same reactant/product?
Thanks
by vincesmetona_3I
Fri Nov 13, 2015 11:08 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Determining if a ligand is polydentate
Replies: 1
Views: 459

Determining if a ligand is polydentate

How can we determine if a ligand is polydentate? Is it simply if there is more than one oxygen, carbon, or nitrogen atom in the ligand?
Thanks
by vincesmetona_3I
Sun Nov 08, 2015 9:45 am
Forum: Naming
Topic: Charges of Ligands
Replies: 1
Views: 532

Charges of Ligands

Is the only way to determine the charge of a ligand through memorization? I know that halogens are always -1, but are there any other rules to follow?
Thanks
by vincesmetona_3I
Sun Nov 01, 2015 5:06 pm
Forum: *Shrodinger Equation
Topic: Meaning of Schrodinger Equation
Replies: 1
Views: 506

Meaning of Schrodinger Equation

What does the Schrodinger wave function tell us?
Thanks
by vincesmetona_3I
Sun Oct 25, 2015 3:11 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Ionic Character and Strength of Bonds
Replies: 4
Views: 2051

Ionic Character and Strength of Bonds

Is there a correlation between ionic character and the strength of a bond? For example, if one ion has more ionic character than another, is the bond weaker or stronger?
by vincesmetona_3I
Wed Oct 21, 2015 11:45 am
Forum: Resonance Structures
Topic: Lewis Structures w/ Nitrogen
Replies: 2
Views: 392

Lewis Structures w/ Nitrogen

Can Nitrogen form a triple bond with itself? In N2H4 for example?
Thanks
by vincesmetona_3I
Sun Oct 18, 2015 11:57 am
Forum: Resonance Structures
Topic: Significance of Resonance Structures
Replies: 1
Views: 428

Significance of Resonance Structures

What do multiple resonance structures tell us about a particular molecule? Why are they significant?
Thanks
by vincesmetona_3I
Tue Oct 06, 2015 7:03 pm
Forum: DeBroglie Equation
Topic: De Broglie Equation
Replies: 1
Views: 282

De Broglie Equation

Will we ever be asked to derive the de Broglie equation on a quiz or exam?
Thanks
by vincesmetona_3I
Fri Oct 02, 2015 12:02 pm
Forum: Properties of Light
Topic: Relationship between frequency and wavelength
Replies: 7
Views: 1317

Re: Relationship between frequency and wavelength

As wavelength decreases, frequency increases and vice versa. As the waves get smaller from peak to peak, the wave oscillates more rapidly (more cycles per unit of time).
by vincesmetona_3I
Thu Oct 01, 2015 6:19 pm
Forum: DeBroglie Equation
Topic: Units for DeBroglie Equation
Replies: 4
Views: 883

Re: Units for DeBroglie Equation

yes

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