Chemical Reaction Lab
Materials & Methods:
This aim of this experiment was to determine whether or not a chemical reaction occurred after the mixing of various chemicals. The evolution of a gas, the formation of precipitation, and the change of temperature or color are all indicative of a chemical reaction. It was assumed that a reaction did not take place if the mixture of chemicals exhibited none of these characteristics. Several precipitation, complex-ion formation, redox, and acid-base reactions were performed.
Redox: Decomposition Reactions
In a 13 x 100 mm test tube, 2 mL of 3% H2O2 were measured and 4-5 MnO2 crystals were added in after. A wooden splint was lit on fire by a Bunsen burner but the flame was blown out as soon as the wood ignited. The splint …show more content…
The mixture was then examined to see if a displacement reaction had occurred.
In a 13 x 100 mm test tube, 2 mL of 0.1 M NaCl and 0.1 g of copper metal stood for ~5 minutes. Observations regarding the displacement of the reaction were made.
Unknown- Determine Activity Series for Two Metals
2 mL of an unknown nitrate solution, metal A, and 0.1 g of a solid unknown metal A were obtained as were 2 mL of an unknown metal B nitrate solution and 0.1 g of an unknown solid metal B. A series of reactions was designed to deduce which unknown metal, A or B, was the more active metal.
Metathesis: Acid-Base Reactions (Nonredox)
In a 50-mL beaker, 2-3 drops of phenolphthalein indicator was added to 9 mL of 0.1 M HCl. Then, 10 mL of 0.1 M NaOH was added drop wise with a pipet to the beaker of phenolphthalein and HCl. Observations about the color of the solution at each step was especially noted.
To a 150-mL, 0.1 gram of sodium hydrogen (solid) was measured and added. Drop wise, 1 mL of 1.0 M HCl was slowly added. The characteristics of the reaction were recorded.
Metathesis- Amphoteric Hydroxides and Complex Ion
This aim of this experiment was to determine whether or not a chemical reaction occurred after the mixing of various chemicals. The evolution of a gas, the formation of precipitation, and the change of temperature or color are all indicative of a chemical reaction. It was assumed that a reaction did not take place if the mixture of chemicals exhibited none of these characteristics. Several precipitation, complex-ion formation, redox, and acid-base reactions were performed.
Redox: Decomposition Reactions
In a 13 x 100 mm test tube, 2 mL of 3% H2O2 were measured and 4-5 MnO2 crystals were added in after. A wooden splint was lit on fire by a Bunsen burner but the flame was blown out as soon as the wood ignited. The splint …show more content…
The mixture was then examined to see if a displacement reaction had occurred.
In a 13 x 100 mm test tube, 2 mL of 0.1 M NaCl and 0.1 g of copper metal stood for ~5 minutes. Observations regarding the displacement of the reaction were made.
Unknown- Determine Activity Series for Two Metals
2 mL of an unknown nitrate solution, metal A, and 0.1 g of a solid unknown metal A were obtained as were 2 mL of an unknown metal B nitrate solution and 0.1 g of an unknown solid metal B. A series of reactions was designed to deduce which unknown metal, A or B, was the more active metal.
Metathesis: Acid-Base Reactions (Nonredox)
In a 50-mL beaker, 2-3 drops of phenolphthalein indicator was added to 9 mL of 0.1 M HCl. Then, 10 mL of 0.1 M NaOH was added drop wise with a pipet to the beaker of phenolphthalein and HCl. Observations about the color of the solution at each step was especially noted.
To a 150-mL, 0.1 gram of sodium hydrogen (solid) was measured and added. Drop wise, 1 mL of 1.0 M HCl was slowly added. The characteristics of the reaction were recorded.
Metathesis- Amphoteric Hydroxides and Complex Ion