Double Replacement Reaction Essay Example
Richard Ortiz-Luis
Sorenson, McClave
11 November 2012
Period 0
Examination of the Formation of Precipitates between Various Aqueous Solutions of Ionic Compounds 11/12/12
Background Information: A double replacement reaction is a chemical reaction that usually takes place between two aqueous ionic compounds. In the reaction, the cation of one compound replaces the other compound’s cation that yields two produce two new and different compounds. A precipitation reaction is a chemical reaction in which the formation of a solid, as one of the products, arises “when two solutions are mixed”(Zumdahl, Decoste 184). This solid is also known as the precipitate of the reaction. One type of evidence that shows a reaction has taken place is the visible formation of a solid. This shows that a chemical reaction has taken place between the compounds by creating a new compound, one that isn’t soluble in water. Another type of evidence is the visible change in the color of the products. This shows that a chemical reaction has occurred because a new substance has formed from the two existing dissolved compounds. Another type of evidence that show a reaction has taken place is if the solution has lost or gained heat. This shows that a reaction has taken place because this means energy was either expelled or used during the reaction and can either be classified as endothermic or exothermic.
Observations:
Data Table 1: Initial Colors of Reactants potassium ferricyanide | Olive Green | sodium phosphate | Colorless | sodium sulfate | Colorless | sodium hydroxide | Colorless | sodium chloride | Colorless | sodium carbonate | Colorless | potassium nitrate | Colorless | magnesium nitrate | Colorless | iron (III) nitrate | Yellowish Hue | zinc nitrate | Colorless | copper (II) nitrate | Bluish Hue | calcium nitrate | Colorless |
Pre-Lab Questions: A double replacement reaction is a chemical reaction that usually takes place between two aqueous ionic
Sorenson, McClave
11 November 2012
Period 0
Examination of the Formation of Precipitates between Various Aqueous Solutions of Ionic Compounds 11/12/12
Background Information: A double replacement reaction is a chemical reaction that usually takes place between two aqueous ionic compounds. In the reaction, the cation of one compound replaces the other compound’s cation that yields two produce two new and different compounds. A precipitation reaction is a chemical reaction in which the formation of a solid, as one of the products, arises “when two solutions are mixed”(Zumdahl, Decoste 184). This solid is also known as the precipitate of the reaction. One type of evidence that shows a reaction has taken place is the visible formation of a solid. This shows that a chemical reaction has taken place between the compounds by creating a new compound, one that isn’t soluble in water. Another type of evidence is the visible change in the color of the products. This shows that a chemical reaction has occurred because a new substance has formed from the two existing dissolved compounds. Another type of evidence that show a reaction has taken place is if the solution has lost or gained heat. This shows that a reaction has taken place because this means energy was either expelled or used during the reaction and can either be classified as endothermic or exothermic.
Observations:
Data Table 1: Initial Colors of Reactants potassium ferricyanide | Olive Green | sodium phosphate | Colorless | sodium sulfate | Colorless | sodium hydroxide | Colorless | sodium chloride | Colorless | sodium carbonate | Colorless | potassium nitrate | Colorless | magnesium nitrate | Colorless | iron (III) nitrate | Yellowish Hue | zinc nitrate | Colorless | copper (II) nitrate | Bluish Hue | calcium nitrate | Colorless |
Pre-Lab Questions: A double replacement reaction is a chemical reaction that usually takes place between two aqueous ionic