Double Replacement Lab Report by Madison Smith

Double Replacement Lab Report by Madison Smith https://padlet.com/madison_smith21/jq3p2ctkri8u By Paige and Maddy-February 23, 2017- Period 7 en-us 2017-02-21 18:37:18 UTC 2023-02-26 00:27:28 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/168516280/833c3aba76c9fa2f177ef2c0565b1f34/chem.jpg Backgroud madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156037929 Double Replacement Reactions: a type of chemical reaction where two compounds react, and the cations and the anions of the two reactants switch places, forming two new products.
Insoluble Salt: Do not dissolve in water. Also known as a precipitate.

Lead Iodide:

Should be a yellow crystalline solid that is insoluble in water (https://cameochemicals.noaa.gov/chemical/3741 ).
Uses: Printing, photography, to see clouds, batteries, bronzing, and special gold applications (https://cameochemicals.noaa.gov/chemical/3741 ) (https://hazmap.nlm.nih.gov/category-details?id=2524&table=copytblagents )

Silver Chloride:

Should be a white crystalline solid that is insoluble in water (http://www.softschools.com/formulas/chemistry/silver_chloride_uses_properties_structure_formula/293/ ).
Uses: Preparation of photographic films, phototchromic lenses, infrared windows, pottery glazes, and stained glass. Also used for disinfectant like in wound healing products, water treatment, and for mercury poisoning (http://www.softschools.com/formulas/chemistry/silver_chloride_uses_properties_structure_formula/293/ ).

]]> 2017-02-24 14:56:56 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156037929 Purpose madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039050 The purpose of the lab was to predict products of chemical reactions and writing out the net ionic equations.]]> 2017-02-24 15:00:09 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039050 Materials madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039143

Pipets

Well Plate

Toothpicks

AgNO3

MgS04

NaOH

Pb(NO3)2

CuSO4

FeCl3

Na3PO4

]]> 2017-02-24 15:00:27 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039143 Prediction Reaction 1 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039320 Molecular Equation: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) +2KNO3(aq)
Complete Ionic Equation: Pb(2+)(NO3)2(-)(aq) + 2K(+)I(-)(aq) → Pb(2+)I2(-)(s) + 2KNO3(aq)
Net Ionic Equation: Pb(2+)(aq) + I(-)(aq) → Pb(2+)I(-)(s)]]> 2017-02-24 15:01:02 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039320 Prediction Reaction 2 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039567 Molecular Equation: FeCl3(aq) + 3AgNo3(aq) → Fe(NO3)3 (aq) + 3AgCl (s)
Complete Ionic Equation:Fe(3+)Cl3(-)(aq) + 3Ag(+)NO3(-)(aq) → Fe(3+)(NO3)3(-) (aq) + 3Ag(+)Cl(-)(s)
Net Ionic Equation: 3Ag(+)(aq) + Cl3(-)(aq) → 3Ag(+)Cl3(-)(s)]]> 2017-02-24 15:01:55 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039567 Procedure madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039831 A 24 well plate was prepared for the experiment and all of the chemicals and other materials were collected in order to begin. Once it was ready, the pipet was used to drop 2 drops of each solution in its designated well, while holding the pipet vertically. Then, each mixture was stirred with a clean toothpick. On the lab paper, the results were recorded by putting "R" for reaction and "NR" for no reaction in each well on the well plate template. The well plate was then photographed. The contents were then dumped down the sink and the well plate was cleaned. ]]> 2017-02-24 15:03:06 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039831 Data and Observations From Reaction 1 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039944 The biggest indicator that a reaction had taken place was a color change from clear to bright yellow. Also a precipitate was formed at the bottom. This bright yellow color, along with a slight precipitate, was created because of the lead iodide mixture that was formed in the well.

(This reaction can be seen in the picture to the right, along with well D3 on the "Well Plate" photo from our lab worksheet.)]]> 2017-02-24 15:03:35 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156039944 Data and Oberservations From Reaction 2 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040075 For this reaction in the experiment, it was clear that a chemical reaction had taken place. There was a very slight color change to white and it was obvious that a precipitate had formed. This was due to the formation of silver chloride creating white chunks at the bottom of the well.

(This reaction can be seen in the picture to the right, along with well A2 on the "Well Plate" photo from our lab worksheet.)]]> 2017-02-24 15:04:06 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040075 Data Analysis Reaction 1 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040441 The net ionic equation, as stated above, is Pb(2+)(aq) + I(-)(aq) → Pb(2+)I(-)(s) for Lead Iodide. The product from the lab does match the expected product that was found in the background research. Our results were validated due to the obvious yellow color change that was shown to be very consistent in this mixture. ]]> 2017-02-24 15:05:22 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040441 Data Analysis Reaction 2 madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040564 Silver Chloride's net equation is 3Ag(+)(aq) + Cl3(-)(aq) → 3Ag(+)Cl3(-)(s). While researching, we found that our product from the lab matches what the background information. Our results are validated by a slight color change, along with the formation of a solid, which is the Silver Chloride. Also, our net ionic equation matches what we found in the background research. ]]> 2017-02-24 15:05:46 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040564 Conclusion madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040839 The purpose was met for this experiment because we predicted the products of chemical reactions and we wrote out the net ionic equations. Lead Iodide should be a yellow, insoluble in water, precipitate and that is what we created in the experiment as you can see in the picture. Silver Chloride should be a white, insoluble in water, precipitate and that is what we created in the experiment as you can see in the picture as well.]]> 2017-02-24 15:06:35 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156040839 Lead Iodide madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156216996 2017-02-26 02:12:00 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156216996 Silver Chloride madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156217033 2017-02-26 02:13:50 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156217033 Well Plate madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156217703 Reaction 1= D3
Reaction 2= A2]]> 2017-02-26 02:36:19 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156217703 Lead Iodide madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156280684 2017-02-26 22:22:04 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156280684 Silver Chloride madison_smith21 https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156280754 2017-02-26 22:22:49 UTC https://padlet.com/madison_smith21/jq3p2ctkri8u/wish/156280754