reactions in aqueous solutions l.
Download
Skip this Video
Download Presentation
Reactions in Aqueous Solutions

Loading in 2 Seconds...

play fullscreen
1 / 13

Reactions in Aqueous Solutions - PowerPoint PPT Presentation


  • 307 Views
  • Uploaded on

Reactions in Aqueous Solutions . Ms. Mack Chapter 10, Section 3 Chemistry I- 3/24/09. Introduction. Many reactions involve substances dissolved in water. When this happens, solutions form Solutions (homogeneous substances) Two parts: SOLUTES- substances dissolved in water

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Reactions in Aqueous Solutions' - salena


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
reactions in aqueous solutions

Reactions in Aqueous Solutions

Ms. Mack

Chapter 10, Section 3

Chemistry I- 3/24/09

introduction
Introduction
  • Many reactions involve substances dissolved in water.
  • When this happens, solutions form
    • Solutions (homogeneous substances)
      • Two parts:
        • SOLUTES- substances dissolved in water
        • SOLVENTS- the most plentiful substance in a solution

Water is the "universal solvent"

water the universal solvent h 2 o
Water, the universal solvent (H2O)
  • Examples of Solutes:
    • Molecular compounds that exist as molecules
    • Molecular compounds that form ions when they dissolve in water (H+ ions=acids)
    • Ionic compounds
      • When dissolved in water, the ions can separate
the products
The Products
  • When 2 aqueous solutions that contain ions are combined, the ions may react with one another in a DOUBLE-REPLACEMENT reaction producing:

A.Precipitate (s)

B. Water (l)

C. Gas (g)

a precipitate
A. Precipitate
  • Use ionic equations to show the details of reactions that involve ions in aqueous solutions
  • Substances are written as ions
  • Complete ionic equations- show all particles involved in a chemical reaction
slide6

Complete Ionic Equation

NaCl (aq) + AgNO3 (aq) NaNO3 (aq) + AgCl (s)

Complete:

Na+(aq) + Cl- (aq) + Ag+ (aq) + NO3-(aq) Na+ (aq) + NO3- (aq) + AgCl (s)

spectator ions
Spectator Ions
  • Notice, that there are ions that appear on both sides of the equation
  • These ions do not participate in the formation of the solid product
  • These ions are called spectator ions.
    • What were the spectator ions in the previous slide?
net ionic equations
Net Ionic Equations
  • Equations that show only the ions involved- omitting the spectator ions are called complete ionic equations!

From the previous example:

Cl- + Ag+AgCl (s)

practice
Practice!
  • Write the chemical, balanced, complete ionic and net ionic equation for the following:

Aqueous solutions of potassium iodide and silver nitrate are mixed, forming the precipitate silver iodide.

See white board for solution!

b water
B. Water
  • Some reactions form water
  • No evidence of the chemical reaction can be observed. Why?
  • Example:

HCl (aq) + KOH (aq) H2O (l) + KCl (aq)

H+(aq) + OH-(aq) H2O (l)

practice11
Practice!

Sulfuric acid (H2SO4) and aqueous potassium hydroxide react to produce water and potassium sulfate.

c gas
C. Gas
  • Common gases produced: carbon dioxide, hydrogen cyanide, and hydrogen sulfide

Example:

Na2S (aq) + HCl (aq) NaCl (aq) + H2S (g)

practice13
Practice!

Sulfuric acid and aqueous rubidium sulfide with production of hydrogen sulfide gas