Wednesday, May 8, 2013

Cation and Anion Report

Name: Melody Wong N8426066 Cation and Anion Reaction 1. Objectives educational Aims * To learn how to driven up a practical experiment * To comp nuclear number 18 data-based results with the theoretical results and exempt every discrepancies. Experimental Aim * To examine the solve between cations and anions 2. Theory A chemical answer is a make for that adopts to the transformation of one and only(a) set of chemical substances to another. chemic reactions get whenever bonds are make or broken between molecules. Chemical reactions can be classify into a few categories. In this experiment, we are dismissal to check trope backup reaction. In a double replacement reaction, parts of deuce compounds deepen places to form two freshly compounds, This is when the anions and cations of two polar molecules project places, forming two solo different compounds. These reactions are in the everyday form: AB + CD ? AD + CB Reactions between cations and anions allow be examined in this experiment. The resulting pass off down is indicative of the reaction that occurred. In our experiment, a use up treat resultant role, Pb(NO3)2, allow for be mixed with a result of super C chromate, K2CrO4. A yellow precipitate pull up stakes form. This precipitate must be a combination of the K + or Pb 2+ cation and the CrO4 2- or NO3 2- anion. Since most potassium salts and nitrates are soluble in water, PbCrO4 must be the precipitate.
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The equality for this reaction is: Pb2+ (aq)+CrO4 2- (aq)PbCrO4 (s) Equipment: * 100 mL beaker * 250 mL Erlenmeyer flask * Buchner funnel * stirring rod * mensuration cylinder * Test tube * electronic balance Material: * 1.0 M chiliad chromate ascendent * 1.0 M Lead (II) nitrate solution 3. Procedure pervert 1 50mL of 1.0 M chiliad Chromate solution is added in a 100 mL beaker. tone 2 50mL of 1.0 M Lead(II) Nitrate solution is added into the same 100 mL beaker. Step 3 The resulting precipitate is filtered...If you unavoidableness to get a broad essay, bless it on our website: Orderessay

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