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Investigating Chemical Equilibrium - Online Essay

Investigating Chemical Equilibrium

Investigating Chemical Equilibrium

Purpose:

To recognize macroscopic properties of chemical systems at equilibrium; observe shifts in equilibrium concentrations as stresses are applied to the systems; and to explain the observations obtained by applying Le Chatelier's principle.

Materials:

* 100 mL graduated cylinder
* 10 mL graduated cylinder
* 250 mL beaker
* two 250 mL Erlenmeyer flasks
* two 100 mL beakers
* fume hood
* hot plate
* electronic balance
* 0.1 mol/L HCl
* 0.1 mol/L NaOH
* 6.0 mol/L HCl
* Bromothymol blue solution
* CoCl2 6H2O
* Distilled water
* Mixture of tap and distilled water

Procedure:

Equilibrium Involving Bromothymol Blue : Refer to ...

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added
* yellow in colour
* transparent liquid

CONTROL
Colour Change #3

* 6 drops of NaOH added
* green in colour
* transparent liquid

CONTROL
Colour Change #4

* 13 drops of NaOH added
* light blue in colour
* transparent liquid

CONTROL
COBALT (II) COMPLEX EQUILIBRIUM

OBSERVATIONS
BEAKER #1 (HCL)
BEAKER #2 (H2O)
Initial

* small purple/red beads
* small purple/red beads

After 1[st] addition

Added HCl to Cobalt Complex

* purple colour
* transparent liquid

Added H2O to Cobalt Complex

- pink, transparent liquid

After 2[nd] addition

Added water

* hot pink/magenta
* transparent liquid
CONTROL
After Heated

* purple
* transparent liquid

CONTROL
After Cooled

* hot pink/magenta
* transparent liquid

...

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Investigating Chemical Equilibrium. (2012, April 24). Retrieved November 30, 2024, from http://www.essayworld.com/essays/Investigating-Chemical-Equilibrium/100845

"Investigating Chemical Equilibrium." Essayworld.com. Essayworld.com, 24 Apr. 2012. Web. 30 Nov. 2024. <http://www.essayworld.com/essays/Investigating-Chemical-Equilibrium/100845>

"Investigating Chemical Equilibrium." Essayworld.com. April 24, 2012. Accessed November 30, 2024. http://www.essayworld.com/essays/Investigating-Chemical-Equilibrium/100845.

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PAPER DETAILS

Added: 4/24/2012 12:08:12 PM
Submitted By: kateoliver
Category: Science & Nature
Type: Free Paper
Words: 717
Pages: 3

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