Search found 19 matches

by dbalestra4F
Sun Mar 13, 2016 11:36 pm
Forum: Method of Initial Rates (To Determine n and k)
Topic: units of k
Replies: 1
Views: 606

units of k

do the units of k strictly follow the guidelines outlined in chapter 15 of the textbook? once you know the overall order of the reaction you know the units of k?
by dbalestra4F
Mon Mar 07, 2016 1:13 am
Forum: *Alkanes
Topic: Tert-pentylohexane
Replies: 1
Views: 420

Tert-pentylohexane

Would the tert-pentyl have the extra single carbon off of one of the three methyl groups or would it change the ethyl group into a butyl group?
by dbalestra4F
Sun Feb 21, 2016 11:55 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre Equilibrium Condition
Replies: 1
Views: 391

Pre Equilibrium Condition

I'm still unclear on this topic, when youre looking at the elementary reactions and determining the rate law, how does knowing that it is in pre equilibrium condition change the way you approach the problem?
by dbalestra4F
Mon Feb 15, 2016 8:55 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Khan Academy Resources
Replies: 2
Views: 660

Re: Khan Academy Resources

Thanks!!! The Khan video was super helpful!
by dbalestra4F
Mon Feb 15, 2016 8:54 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Average rate [ENDORSED]
Replies: 6
Views: 597

Re: Average rate [ENDORSED]

Rates are negative because the concentration of reactants will be decreasing because the reactants are turning into products. When the reactants are being converted into products the rate will be negative.
by dbalestra4F
Sun Feb 07, 2016 11:56 pm
Forum: Balancing Redox Reactions
Topic: Oxidation and Reduction
Replies: 3
Views: 512

Re: Oxidation and Reduction

Did I answer the first part of your question?
by dbalestra4F
Sun Feb 07, 2016 11:55 pm
Forum: Balancing Redox Reactions
Topic: Oxidation and Reduction
Replies: 3
Views: 512

Re: Oxidation and Reduction

For half reactions, the oxidized half reaction shows the atom losing electrons. The reduced half reaction shows the atom gaining electrons.
by dbalestra4F
Sun Jan 31, 2016 11:39 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity
Replies: 6
Views: 851

Re: Heat Capacity

for irreversible expansion, doe P(external) always equal P(internal)??? see example 8.6 in the book!
by dbalestra4F
Sun Jan 24, 2016 11:32 pm
Forum: Calculating Work of Expansion
Topic: Irreversible vs Reversible --> work equations
Replies: 5
Views: 9962

Re: Irreversible vs Reversible --> work equations

During irreversible reactions, does external pressure = pressure of the system?
by dbalestra4F
Sun Jan 10, 2016 11:11 pm
Forum: Phase Changes & Related Calculations
Topic: State function
Replies: 3
Views: 481

Re: State function

I'm not sure, but I would assume so since it involves enthalpy. However, I'm not very clear on what a state function is. What exactly does it mean for something to be a state function? What can be a state function (other than enthalpy)?
by dbalestra4F
Sun Dec 06, 2015 11:28 pm
Forum: Conjugate Acids & Bases
Topic: Conjugate Base Stability
Replies: 2
Views: 2687

Re: Conjugate Base Stability

The more electronegative the atoms around the central atom, the stronger the electron withdrawing power. This delocalizes the negative charge, making the conjugate base of the acid more stable. Also, the higher the number of oxygen atoms in a nonmetal oxide acid (higher the oxidation number) the mor...
by dbalestra4F
Sun Nov 29, 2015 11:00 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strong/weak acids
Replies: 6
Views: 2068

Re: Strong/weak acids

Also, the greater the electronegativity of the element A in the acid HA, the stronger the acid HA is. (trend is across a period) The weaker the bond in HA, the stronger the acid HA (trend is down a group). The greater the electronegativity of the halogen, the stronger is the oxoacid (HClO, HBRO, HIO...
by dbalestra4F
Sun Nov 22, 2015 8:12 pm
Forum: Naming
Topic: Adding "-ate" to a metal
Replies: 5
Views: 851

Re: Adding "-ate" to a metal

Do you ever at -ite to a metal? Or is that just for anions that are attached to the TM complex?
by dbalestra4F
Fri Nov 06, 2015 5:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Octet Rule
Replies: 3
Views: 547

Octet Rule

Is there a maximum number of atoms (and/or electrons) that can be around the central atom if the central atom doesn't obey the octet rule? Is it 6 atoms and 12 electrons?
by dbalestra4F
Fri Oct 30, 2015 10:44 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Bond Order and Bond Stability
Replies: 4
Views: 5875

Re: Bond Order and Bond Stability

A higher bond order is generally lower in energy than a lower bond order.
by dbalestra4F
Sat Oct 24, 2015 12:05 pm
Forum: Octet Exceptions
Topic: Expanded Octets
Replies: 4
Views: 1326

Re: Expanded Octets

So, elements that can expand their octets can only accept the same number of valence electrons they have?
Can someone point to where in the text I can read this?
Thank you!
by dbalestra4F
Sat Oct 24, 2015 11:54 am
Forum: Ionic & Covalent Bonds
Topic: Nitrogen Bonding
Replies: 1
Views: 410

Nitrogen Bonding

How do you know when nitrogen is able to "lose" one of its electrons to another element and make four bonds, like in N2O?
by dbalestra4F
Sun Oct 18, 2015 9:51 pm
Forum: Quantum Numbers and The H-Atom
Topic: Negative electron energy
Replies: 2
Views: 629

Re: Negative electron energy

In the schrodinger equation, there is a negative sign to specify the wave function. The wave function (psi), which the equation solves for, is squared to find psi^2 which represents the probability of finding an electron. Otherwise, when you square root the psi squared value, you get + or - psi, so ...
by dbalestra4F
Sat Oct 10, 2015 7:05 pm
Forum: Properties of Light
Topic: wavelength verbiage
Replies: 2
Views: 533

Re: wavelength verbiage

Yes, there is a difference between wavelength of light emitted and frequency of light emitted.
The Rydberg Equation solves for the frequency of the light emitted. If the question asks for the wave length, us the wavelength= c/frequency to find the wave length.

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