Search found 14 matches

by Erin Jannusch
Fri Dec 08, 2017 4:52 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Example 12.7
Replies: 1
Views: 97

Example 12.7

In example 12.7 of the text, why is the "-x" eliminated from the denominator of the expression for Ka? Does this portion of the equation not affect the result?
by Erin Jannusch
Fri Dec 08, 2017 4:39 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Percentage deprotonation
Replies: 2
Views: 177

Percentage deprotonation

Why is it that when calculating percentage deprotonation we can substitute [H30+] with [A-]?
by Erin Jannusch
Fri Dec 08, 2017 4:19 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: number of oxygen atoms effect on acidity
Replies: 1
Views: 166

number of oxygen atoms effect on acidity

Why is it that acids are stronger when there is a greater number of oxygen atoms attached to a central atom? What does this have to do with the concept of oxoacids?
by Erin Jannusch
Fri Dec 08, 2017 12:45 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pKw
Replies: 1
Views: 1409

pKw

What is pKw used to calculate? I know that it can be found by multiplying the concentrations of hydronium and hydroxide ions, but I am wondering what this calculation in used for and what it really tells us about a solution.
by Erin Jannusch
Fri Dec 08, 2017 1:50 am
Forum: Bronsted Acids & Bases
Topic: Bronsted Acids and Bases versus Lewis Acids and Bases
Replies: 3
Views: 282

Re: Bronsted Acids and Bases versus Lewis Acids and Bases

The Lewis definition of a base is broader than the Bronsted definition. Although every Bronsted base is a Lewis base, not every Lewis base is a Bronsted base. Carbon monoxide is a Lewis base, but it is not a Bronsted base because it does not accept protons.
by Erin Jannusch
Wed Dec 06, 2017 10:05 am
Forum: Hybridization
Topic: Figure 4.31 [ENDORSED]
Replies: 1
Views: 147

Figure 4.31 [ENDORSED]

Can someone please explain figure 4.31, the molecular orbital energy-level diagram for homonuclear diatomic molecules? I don't understand which energy level you would go to after sigma 2s*, sigma 2p or pi 2p.
by Erin Jannusch
Wed Dec 06, 2017 12:22 am
Forum: Hybridization
Topic: how to determine hybridization
Replies: 4
Views: 248

how to determine hybridization

Is hybridization completely determined by molecular shape (VSEPR)? If not, what role, if any, do the individual atom's electron configurations play?
by Erin Jannusch
Tue Dec 05, 2017 11:51 pm
Forum: Hybridization
Topic: sp2 hybridization
Replies: 5
Views: 254

sp2 hybridization

Can someone please explain why BF3 is sp2 hybridized? I don't understand how boron, having the electron configuration of [He] 2s2 2p1, and flourine, with the electron configuration [He] 2s2 2p5, mix one s-orbital with two p-orbitals to produce three sp2 hybrid orbitals.
by Erin Jannusch
Tue Dec 05, 2017 11:22 pm
Forum: Hybridization
Topic: sp3 hybridization
Replies: 6
Views: 364

sp3 hybridization

The book says that whenever an atom in a molecule has a tetrahedral electron arrangement, it is sp3 hybridized. How do lone pairs affect this hybridization? For example would a molecule with the trigonal planar or seesaw shape also be sp3 hybridized?
by Erin Jannusch
Sun Oct 22, 2017 11:59 pm
Forum: Properties of Light
Topic: Coulomb” potential
Replies: 2
Views: 218

Coulomb” potential

Can someone explain the equation for Coulomb” potential energy?
by Erin Jannusch
Sun Oct 22, 2017 11:56 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Born Interpretation
Replies: 1
Views: 146

Born Interpretation

Is there a way of knowing the probability that a particle will be found in a certain region without knowing the probability density or the volume? If asked a question about the born interpretation, would you always have two out of the three variables?
by Erin Jannusch
Sun Oct 22, 2017 11:48 pm
Forum: Properties of Light
Topic: The uncertainty principle [ENDORSED]
Replies: 5
Views: 420

The uncertainty principle [ENDORSED]

If all matter has wave like properties, why does the uncertainty principle only apply to subatomic particles?
by Erin Jannusch
Sun Oct 22, 2017 11:44 pm
Forum: Properties of Light
Topic: Is strength/energy of a light determined by amplitude?
Replies: 1
Views: 217

Is strength/energy of a light determined by amplitude?

If the amplitude of a wave were to be enhanced by constructive interference would this make the light stronger or brighter? I know that the energy of light is determined by planks constant times the frequency. So does that mean that the energy and the amplitude of a wave are not related? Thanks in a...
by Erin Jannusch
Thu Oct 05, 2017 7:50 pm
Forum: Limiting Reactant Calculations
Topic: After determining the limiting reactant, how do you find the mass of a product?
Replies: 2
Views: 207

After determining the limiting reactant, how do you find the mass of a product?

EX. from module 3: 21. According to the following equation, 0.750 g of C6H9Cl3 is mixed with 1.000 kg of AgNO3 in a flask of water. A white solid, AgCl, completely precipitates out. What is the mass of AgCl produced? C6H9Cl3 + 3AgNO3 ---> AgCl + C6H9(NO3)3. Molar Mass: C6H9Cl3 (187.50 g/mol), 3AgNO3...

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