Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Chapter 15 Water and Aqueous Systems

Prentice Hall Chemistry Ch15 class
by

Pilar Hernandez

on 11 May 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Chapter 15 Water and Aqueous Systems

Water and
Aqueous
Systems Heterogeneous
Aqueous Systems In these systems the particles are not dissolved.
They are dispersed. Depending on the size of the particle dispersed is the name of the system:
Suspension (>1000 nm)
Colloid (>1 nm; <1000 nm) A suspension is a system where the particles don't stay dispersed for long.
They tend to settle and can be separated by filtration. A colloid is a heterogeneous system where the particles are bigger than those of a solution, but smaller than those in a suspension.

It has two phases:
Dispersion medium
Dispersed phase Colloids have three main characteristics:
Tyndall effect
Brownian motion
Coagulation Dispersion medium:

Solid
Liquid
Gas Aqueous Systems A solution is a homogeneous
mixture composed of two parts:
Solvent (bigger part)
Solute (smaller part) Is the dissolving
medium Are the particles
that dissolve In an aqueous solution
water is always the solvent Solvation process Electrolytes
(Strong or weak) A strong electrolyte exists almost completely dissociated into ions.
A weak electrolyte yields very few ions. A non-electrolyte is a substance that doesn't conduct an electric current in either an aqueous solution or its molten state.
Example: Sugar. Hydrates:
Ionic compounds that contain water of hydration or water of cristallization.
The formula indicates how many molecules of water per formula unit.
Ex. CuSO4·5H2O Types of Hydrates:
Efflorescent: Loses water easily
Hygroscopic: Gains water easily
Deliquescent substances:
Traps water from air and dissolves completely. A substance that produces ions when dissolved in water or in its molten state is called an electrolyte. Properties of
Water High Surface Tension Low
Vapor Pressure Solid State Density
Full transcript