Equipment weigh boat digital scale 100ml graduated

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Equipment Weigh boat Digital scale 100mL graduated cylinder 100mL volumetric flask Copper (II) sulfate Aluminum Calorimeter Temperature probe Laptop Stir rod Distilled water Triple beam balance Raw Data
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Owen Kulp May 3, 2019 Academic chemistry Period 2 Partner: Ashleigh Moss Components Result Calorimeter (empty) 21.8 g. Calorimeter and solution 120.37 g. Calorimeter and contents (final) 123.35 g. Copper (II) Chloride 2.557 g. Aluminum 0.200 g. Initial temperature © 23.8 Final temperature © 32.0 Reaction 2 Al ( s ) + 3 Cu Cl 2 ( aq ) 2 AlCl 3 ( aq )+ 3 Cu ( s ) ¿ + 3 Cu ( s ) ¿ 2 Al + 3 + 6 Cl ¿ 2 Al ( s ) + 3 Cu + 2 + 6 Cl ¿ 2 Al ( s ) + 3 Cu + 2 2 Al + 3 + 3 Cu ( s ) ¿ Al ( s ) → Al + 3 + 3 e ¿ 1.66V. ¿ →Cu ( s ) Cu + 2 + 2 e ¿ 0.34V.
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Owen Kulp May 3, 2019 Academic chemistry Period 2 Partner: Ashleigh Moss Calculations Molarity of solute 0.015 mol 0.1 L. = 0.150 Mass of Copper (II) chloride excess 0.200 g . Al ( 1 molAl 26.98 g. Al ) ( 1 mol Al Cl 3 2 mol Al ) ( 133.33 1 mol AlCl 3 ) = 0.494 g Al 2.557 gCuCl 2 ( 1 63.35 )( 3 1 ) ( 134.45 g.CuCl 2 1 molCu ) = 3.626 g.Cu Volume of Copper (II) Chloride excess 0.200 g Al 1 × 1 mol Al 26.98 g Al × 3 molCu Cl 2 2 mol Al × 1000 mL 0.150 mol = 74.1 mL 100 mL 74.1 mL = 25.9 mL = 30 mL Standard Free Energy Change ∆G ° =− nFE ° ( 6 ) ( 96485 ) ( 2.00 ) =− 1,157,820 J . =− 1,200 kJ Enthalpy of reaction q = C p m ∆T 4.18 × ( 123.35 23.81 ) ( 32.0 23.4 ) = 3578 J . 3578 0.200 gAl 1 × 1 molAl 26.98 gAl × 2 molAl 1 = 1.3 × 10 3 kJ Results Calculated Result Mass of Copper (II) Chloride 2.557 g. Mass of elemental copper 3.626 g. Cu
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Owen Kulp May 3, 2019 Academic chemistry Period 2 Partner: Ashleigh Moss Standard Free energy Change -1,200 kJ Volume of Excess 30 mL Molar enthalpy of reaction -1.3x10 3 kJ/mol rxn Standard Deviation σ = ( X ´ X ) 2 n (− 1,300 −− 1096 ) 2 +(− 1000 ( 1096 ) ) 2 +(− 930 ( 1096 ) ) 2 +(− 1200 ( 1096 ) ) 2 +(− 970 ( 1096 ) ) 2 5 = 140.0 k Conclusion This experiment was created to demonstrate how calorimetry can be used to find the enthalpy of a reaction. An enthalpy of reaction is the change of heat in a system when a reaction takes place. This particular experiment dealt with the enthalpy of reaction within the reaction of
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