Search found 10 matches
- Sun Dec 06, 2015 4:54 am
- Forum: Polyprotic Acids & Bases
- Topic: Properties of strong acid/weak base
- Replies: 1
- Views: 522
Properties of strong acid/weak base
I understand that strong acids lose H+ easily and result with a stable anions. However, what does it mean when the "negative charge on the conjugate base is stabilized by greater number of elections withdrawing atoms"? Is this a different bond property in terms of electronegativity?
- Tue Dec 01, 2015 4:27 am
- Forum: Conjugate Acids & Bases
- Topic: Weak Acid and Weak Base
- Replies: 1
- Views: 375
Re: Weak Acid and Weak Base
Weak acids and weak bases do not fully dissociate into ions at equilibrium (in water). Calculating pH of these solutions similar method by using ICE table, Ka or Kb constants, etc. in the similar way to calculate strong acids/base. One thing to be mindful is that if the initial concentration of weak...
- Tue Nov 24, 2015 11:48 am
- Forum: Bronsted Acids & Bases
- Topic: Acid Strength?
- Replies: 2
- Views: 417
Re: Acid Strength?
Acid strength is determined by: - Polarity of the X-H bond: more polar = stronger acid - Size of X atom: go down a periodic column = X-H bond becomes weaker = stronger acid - Charge of the acid/base: negative charge decreases = more acidic - Oxidation state of central atom: *only when polarity, size...
- Sat Nov 14, 2015 9:25 pm
- Forum: Ideal Gases
- Topic: PV=nRT
- Replies: 2
- Views: 773
PV=nRT
According to the Ideal Gas Law, pressure increases as temperature increases, and temperature increases as volume increases. Then why doesn't it make sense for pressure to increase as volume to increase?
- Mon Nov 09, 2015 1:03 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Naming
- Replies: 2
- Views: 486
Re: Naming
- When writing a molecule, you want to start with C atoms first, then H, then the rest in alphabetical order. - However, there are exceptions including ionic compounds and oxids/hydroxides/acids. - In an ionic compounds, the action is listed firs and the anion is listed second. - Oxides end in oxyge...
- Sun Nov 01, 2015 9:41 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Difference Between Polar and Nonpolar Bonds
- Replies: 2
- Views: 1535
Re: Difference Between Polar and Nonpolar Bonds
H2O is a polar molecule because of the 2 lone pairs of e- on the central atom O. This makes this an angular/bent shape of molecule (dipole moments won't cancel).
CS2 is a nonpolar molecule because it is linear shaped (dipole moments cancel each other out).
CS2 is a nonpolar molecule because it is linear shaped (dipole moments cancel each other out).
- Sun Oct 25, 2015 6:40 am
- Forum: Lewis Structures
- Topic: ClONO2
- Replies: 1
- Views: 992
Re: ClONO2
If you put double bonds on both oxygens of NO2, then there will be a total of 5 bond lines which invalidates the octet rule. Otherwise, I think the structure in the solutions manual has the lowest formal charges as it can have.
- Sun Oct 18, 2015 7:03 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic Bond Structure
- Replies: 1
- Views: 327
Re: Ionic Bond Structure
I think that all ionic compounds do have a "crystal structure" - meaning that the larger anions are arranged together in rows with the cations filling in the spaces in-between close packed layers. Lattice energy is used to explain stability of ionic solids.
- Sat Oct 10, 2015 4:08 pm
- Forum: Trends in The Periodic Table
- Topic: Electron Affinity Trends
- Replies: 1
- Views: 309
Re: Electron Affinity Trends
Upper right elements generally have higher electron affinities because electrons are added to each energy level as they become closer to the nucleus and have stronger attraction. Hence, those same elements have lower atomic radii because the strong attraction pulled in electrons closer to the nucleu...
- Fri Oct 02, 2015 5:40 pm
- Forum: Properties of Light
- Topic: Wavelike Properties of Electromagnetic Radiation/Light
- Replies: 2
- Views: 463
Re: Wavelike Properties of Electromagnetic Radiation/Light
I agree too. The slope of the EM radiation wave display can be seen by looking at the height/amplitude of the wave. The higher the wave, the stronger the force the field exerts on a charged particle. Low frequency represents low energy with larger wavelengths.