Double replacement reactions are fascinating. In this lab, 16 reactions are given to create a balanced chemical equation and predict products by using a solubility table. This experiment shows comprehension of reactions and provides reasoning and visuals into the complexities of double replacement reactions. The lab aims to enhance understanding of chemical reactions, providing some depth about these processes. A double replacement reaction is when two compounds exchange positive and negative ions to create new substances and new compounds. This reaction occurs when positive ions and negative ions of two different compounds change places, this results in the formation of two entirely new compounds. These reactions usually occur in aqueous …show more content…
Double replacement reactions are used for a lot of things, often used in labs for the creation of new compounds in chemistry, because certain ions can react and form new substances they are also used in the separation of substances. Additionally, double-replacement reactions can tell chemists about unknown substances for example the precipitate shows a color change which can show the presence of specific ions. They also allow the development of new chemicals, the study of unknown molecules, and the separating of ions based on response and reactivity. In conclusion, the double replacement reactions lab shows multiple ways to predict the products of a chemical reaction. The outcomes are as anticipated. Double replacement reactions are placed during the experiment and one can see, which proves that the reaction was taking place and that it is possible to predict the outcome. All of the double replacement reactions are correctly detected and there is either a precipitate or there isn’t, the results are accurate. When the anticipated states don't coincide with those listed on the solubility table, an error has occurred in terms of accuracy. Equations become balanced, and the error can be quickly
This demonstrated our ability to both create a solution, and correctly interpret the task at hand. In the second lab, Introduction to General Chemistry, An Experimental Tour, we were asked to accurately record data,
Double Replacement Lab Report Date Completed: October 8, 2015 Objective To analyze and determine if a chemical reaction occurred between two compounds using the concepts we learned in class. Also, if the chemical reaction occurred, to determine if it formed a precipitate or gas. Safety General Safety Precautions: Do not touch the chemicals Use of gloves and coats are recommended, use of goggles should be required Keep the work area clean Dispose of the chemicals properly, DO NOT dispose them in the sink Clean up your work station Wash your hand before and after the lab Make sure all chemicals are labeled correctly NEVER return chemicals to reagent bottles Use the wafting technique to smell the chemical Clean up spills immediately
In order to find the amount of a product made during a double displacement reaction, the product has to be separated from the solution. From this number of moles of precipitate can be calculated. From there the number of moles of reactants can be calculated using the mole ratios of the particular reaction that occurred. As seen in Table 5 it is shown that by finding out the number of moles of the unknown, the molar mass of the unknown can be calculated. From the found mass of the unknown compound, the mound of the original ion can be found.
Double Displacement: If the reaction that occurs is double displacement then an increase in reactants will reesult in creating two or more compounds/reactants. Experimental Design Part A: A large well plate was placed on the lab station, each well was filled with either copper (II) nitrate, magnesium nitrate, or zinc nitrate. Added to each of the wells was three strips of copper wire, magnesium ribbon, and zinc metal (powder form). Using a toothpick, you submerged the metals in the liquid and ensured they did not touch.
Everything can change from one substance to another, but the creation and the end of some things never happen .On a beautiful day on the fourth of December in 2015, the class of SNC1D5 started a lab on different kinds of molecules. The reason why we did this lab was to investigate the chemical and physical changes between different substances. Substances can change from one substance to another that have alternate physical and chemical properties by chemical reactions or with reactants or with heat. A physical change mixes up molecules but doesn’t hurt their inner structure.
Out of the 5 chemical reactions, there were 3 different indicators of a chemical reaction. These indicators are change in color, fizzing sound , and bubbling up. Two indicators are visual and one indicator is auditory. Change in color occurred in 2 out of the 5 chemical reactions. Fizzing sound occurred in 1 out of the 5 chemical reactions.
The main purpose for this experiment was to become familiar with the differences of elements, mixtures and compounds. The lab consisted on performing four different tests on both Iron (Fe) and Sulfur (S). If the four experiments were performed on each element then their would be a different reaction for each. The first test consisted of simply laying out a certain amount of each element of a piece of paper and observing the reaction when a magnet was placed on the bottom. The second test consisted on mixing in a 100ml beaker, 30ml of water and the respective amount used in the previous step of each element and analysing what the reaction was.
Two chemical reactions are carried by adding sodium hydroxide to the acidic solution from Part I. During the first reaction is the neutralization of the excess of nitric acid in the mixture by sodium hydroxide. The second reaction takes the place after naturalization is a complete and NaOH is in excess. While the liquid inside the beaker is being stirred, with the stirring rod, 10 ml of 6 M NaOH is poured into the solution from Part I at 1 mL at a time. After each 1 mL the solution is tested for acidity with red litmus paper.
The reaction chamber was attached to an Oxygen collection tube. Water is filled at least three-quarters the way up in the bucket. Various percentages of substrate concentration (5%, 15%, and 25%) was added to the reaction chamber and the Oxygen tube is filled with water and contained a water bubble at the top. The initial height of the water in the Oxygen tube was recorded. After 30 seconds, the total change was determined and recorded.
A double replacement reaction occurs when two compounds with two elements in each compound combine. After they combine, the first element in the first compound combines with the second element in the second compound; the first element in the second compound combines with the second element in the first compound. For example: AB + CD ⟶ AD + CB When we were assigned this lab, we were told that we had to produce 2.00g of barium sulfate. We chose to use barium nitrate (Ba(NO3)2) and lithium sulfate (Li2SO4). In order to be sure that these compounds would be safe to combine, we did some research on them.
Abstract: To determine the rate law in each reaction and find the reaction rate, an experiment was conducted with acetone, acid, iodine, and water. By using different concentrations of each substance, a number of 4 times, the rate was giving of each reaction and recorded the times it took to react. Based off the results from the first four reactions, further data was collect with a fifth reaction. Using 15mL of acetone, 10mL of hydrochloric acid, 5mL of iodine, and 20mL of water, we got a rate of 8.77× 10-7. The reaction rate was much higher than the rates of the previous reactions.
Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of
Experiment 2 Report Scaffold (Substitution Reactions, Purification, and Identification) Purpose/Introduction 1. A Sn2 reaction was conducted; this involved benzyl bromide, sodium hydroxide, an unknown compound and ethanol through reflux technique, mel-temp recordings, recrystallization, and analysis of TLC plates. 2. There was one unknown compound in the reaction that was later discovered after a series of techniques described above.
Aluminum (s) + Sulfuric acid (aq) > Hydrogen (g) + Aluminum sulfate (aq) 2 Al (s) + 3 H2SO4 (aq) > 3 H2 (g) + Al2(SO4)3 (aq) This reaction undergoes physical and chemical changes, there is a chemical change as there are new products formed and a physical change as there are changes in state. 3.