Search found 23 matches

by haleygamboa2E
Mon Mar 07, 2016 4:37 pm
Forum: *Amines
Topic: Double/Triple Bonds vs. Functional Groups
Replies: 1
Views: 1549

Double/Triple Bonds vs. Functional Groups

When naming organic compounds, do all functional groups have priority over both triple/double bonds? Or are there some exceptions?
by haleygamboa2E
Wed Mar 02, 2016 12:40 am
Forum: *Haloalkanes
Topic: Halogens vs Substituents
Replies: 1
Views: 753

Halogens vs Substituents

When naming structures, do halogens get priority over carbon substituents? Or would it just be everything by alphabetical order?
by haleygamboa2E
Sat Feb 27, 2016 5:29 pm
Forum: *Alkanes
Topic: 1.9 part c
Replies: 3
Views: 377

Re: 1.9 part c

I thought the common name for pentane was neo?
by haleygamboa2E
Sat Feb 27, 2016 5:23 pm
Forum: *Alkanes
Topic: 1.9 part c
Replies: 3
Views: 377

1.9 part c

Part C the structure is 2-methylbutane and the molecular formula is (CH3)2CHCH2CH3. Why can the name also be isopentane?
by haleygamboa2E
Thu Feb 18, 2016 10:03 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation Energy Graph
Replies: 1
Views: 397

Activation Energy Graph

Does an activation energy graph predict spontaneity?
by haleygamboa2E
Wed Feb 17, 2016 6:51 pm
Forum: Second Order Reactions
Topic: Units for Second Order
Replies: 2
Views: 937

Units for Second Order

What does it mean if the units for k are M^-4s-1 or M^-3s-1? Does this still imply second order?
by haleygamboa2E
Mon Feb 08, 2016 9:02 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Units for delta G, S, H
Replies: 1
Views: 8049

Units for delta G, S, H

Can there be different units for delta G, S, and H? OR is this the standard:

deltaG = kJ/mol
deltaH= kJ/mol
deltaS= J/K

Does deltaG have different units depending on which equation is used?
by haleygamboa2E
Sat Feb 06, 2016 10:27 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 14.15 c)
Replies: 2
Views: 358

14.15 c)

Why do you not need to add Pt to the cell diagram? Why do you add KOH to the cell diagram?
by haleygamboa2E
Sat Feb 06, 2016 7:10 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 11.19 and 11.83
Replies: 3
Views: 466

Re: 11.19 and 11.83

Do you still need to use deltaH and deltaS values to find the equilibrium constant if the initial temperature is 298K?
by haleygamboa2E
Sun Jan 31, 2016 11:26 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Irreversible vs. Reversible Reactions
Replies: 1
Views: 365

Irreversible vs. Reversible Reactions

Which entropy formula do you use for an irreversible reaction? I understand that deltaS = q(rev)/T is used for reversible reactions, but what about for irreversible?
by haleygamboa2E
Sun Jan 24, 2016 11:10 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: 9.15
Replies: 1
Views: 364

9.15

Why is the answer for part (a) negative? (Besides that the heat of fusion is negative)
by haleygamboa2E
Sun Jan 17, 2016 11:54 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Isothermal Reactions
Replies: 4
Views: 565

Isothermal Reactions

Does isothermal mean no heat exchange?
by haleygamboa2E
Sun Jan 10, 2016 10:20 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Work Formulas
Replies: 1
Views: 299

Work Formulas

What do the different types of work imply? How do you know when to use a certain work formula? I am referring to the table 8.1 on page 262.
by haleygamboa2E
Mon Nov 30, 2015 11:51 pm
Forum: Calculating the pH of Salt Solutions
Topic: pH of H2O
Replies: 1
Views: 435

pH of H2O

In the reversible reaction:
HCl + NaOH -> Na+ + Cl- + H2O

How is the stoichiometric point 7? If the salt does not affect the pH and water is slightly basic, how is this possible?
by haleygamboa2E
Sun Nov 29, 2015 11:56 pm
Forum: Identifying Acidic & Basic Salts
Topic: Cancellation of Ions in a Reaction
Replies: 1
Views: 373

Cancellation of Ions in a Reaction

In the reversible reaction:
NH4+ + H2O -> H3O+(aq) + NH3(aq)

Ammonium chloride is the initial salt. Why does Cl- not affect the solution and why is it not involved in the reaction? Does this occur for the same reason why NaCl does not affect the pH of a solution?
by haleygamboa2E
Sun Nov 22, 2015 8:14 pm
Forum: Polyprotic Acids & Bases
Topic: Ka for Polyproptic Acids
Replies: 2
Views: 535

Ka for Polyproptic Acids

What happens to the reaction when you add chemical reactions? What does it mean when the Ka gets larger or smaller?
by haleygamboa2E
Sun Nov 15, 2015 12:46 pm
Forum: Naming
Topic: Naming -Water as a Ligand
Replies: 1
Views: 292

Naming -Water as a Ligand

What is the difference between naming water as (H2O) and (OH2) when you are writing this as a ligand?
by haleygamboa2E
Mon Nov 09, 2015 1:07 am
Forum: Naming
Topic: Ligands
Replies: 1
Views: 357

Ligands

Do ligands with the same formula and different structures have different properties?
by haleygamboa2E
Sun Nov 01, 2015 11:59 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: 4.107 c)
Replies: 1
Views: 182

4.107 c)

What changes in bond order, bond distance, and magnetic properties are expected to occur in the following ionization processes? c) O2 --> O2+ e-

How do you account for the electron?
by haleygamboa2E
Sun Oct 25, 2015 12:13 pm
Forum: Lewis Structures
Topic: 3.65 part C
Replies: 1
Views: 345

3.65 part C

Write the Lewis structure and state the number of pairs on xenon, the central atom of each of the following molecules: c) XeF4
by haleygamboa2E
Sun Oct 18, 2015 1:00 am
Forum: Ionic & Covalent Bonds
Topic: Breaking Bonds
Replies: 2
Views: 426

Breaking Bonds

Is it possible to break bonds? Do they reform naturally?
by haleygamboa2E
Sat Oct 10, 2015 11:19 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Question about Heisenberg Equation
Replies: 1
Views: 383

Question about Heisenberg Equation

When we are given the change in radius, I know that we always convert it to diameter for the delta x value, but why exactly do we do that?
by haleygamboa2E
Sat Oct 03, 2015 11:42 pm
Forum: Empirical & Molecular Formulas
Topic: F.21
Replies: 1
Views: 409

F.21

I have a question regarding number 21 in section F in the Fundamentals chapter. Q: In 1978, scientists extracted a compound with antitumor and antiviral properties from marine animals in the Caribbean Sea. A sample of the compound didemnin-A of mass 1.78 mg was analyzed and found to have the followi...

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