Chemical Equilibrium chem 118 - Chemical Equilibrium David...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemical Equilibrium David Mulkey 2/08/2011 Chemistry 118 Section M3 Group members: Stephan Real and Justin Pollock
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1. Ammonium chloride (NH 4 Cl) increases shelf life. It is stable under ordinary conditions for use and storage. It is not considered a fire hazard, but at fire temperatures ammonium chloride begins to corrode metals and may dissociate into ammonia and hydrogen chloride. Therefore, ammonium chloride can be used as a stabilizing agent to increase the new hair products shelf life. Equilibrium equation: NH 4 Cl ↔NH 3 + HCl (ammonium chloride dissociates into ammonia (NH 3 ) and hydrogen chloride (HCl) 2. For the experiment, the color of the iron (III) [Fe 3+ ] solution was to be observed. A stock Fe 3+ solution was made by adding .2 M (molarity) FeCl 3 aqueous (aq) to ten milliliters of water in a test tube. Twenty drops of this solution was added to five different wells on a well plate. Each well plate was mixed with ten drops of one of the following five solutions: .2 M iron (III) nitrate [Fe(NO 3 ) 3 ], sodium chloride (NaCl), Potassium thiocyanate (KSCN), saturated sodium fluoride (NaF), and tetrapotassium iron(II) hexacyanide (K 4 [Fe(CN) 6 ]).When Fe(NO 3 ) 3 was added to the stock solution the solution changed from a pale light yellow to a darker yellow which means there was an increase in the concentration of Fe 3+ with the chemical equation being: FeCl 3 + [Fe(NO
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/29/2011 for the course CHEMISTRY 115L taught by Professor March during the Spring '10 term at University of Alabama at Birmingham.

Page1 / 3

Chemical Equilibrium chem 118 - Chemical Equilibrium David...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online