Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/12

Click to flip

12 Cards in this Set

  • Front
  • Back
What is the distance between:
1) A hydrogen and oxygen atom in a water molecule
2) the hydrogen and oxygen of two hydrogen bonded molecules
1) 1.0 Angstrom

2) 1.8 Angstrom
What arrangement of 2 molecs H-bond is stronger? Weaker?
Linear is strongest. Bent is weaker.
How many bonds on average is each H2O molec in water involved in?
3.4
Dielectric constant?
(D) Whe factor by which attractive forces are decreased by a solvent
What is the dielectric constant of water?
80
amphiphile
molecule that has both a hydrophobic and hydrophilic portion
What is the approximate speed of the ionization of water?
about 10^-9th seconds
(1 nanosecond)
Equilibrium constant of water (equation)
Kw=[H+][OH-]
Kw at equilib =
10^-14
Ionization of water equation
pH = -log[H+]
Henderson-Hasselbalch equation
pH = pKa+log([A-]/[HA])
Buffers
- acid-base pair
-effectiveness depends on [] and - when the pH is in the vicinity of the pKa (+/-1)