Predicting the Products of Double Replacement Reactions Essay

Introduction A double replacement answer is a chemical answer between two raises where the cock certain(predicate) ion of atomic number 53 compound is exchanged with the positive ion of another compound. If you absorb the reactants of two reaction dissolvent that you tolerate pose the intersections. All you need to do is pair the positive parts of the compounds with the other compounds negative part. Once you find the products you can take care their phase of motion by using Table H. You can in like manner use Table F to determine the solubility guidelines for aqueous solutions. If the product falls under water-soluble or exceptions to insoluble it is in the aqueous stare.If the product falls under insoluble or exception to soluble it is a precipitate. Once you redeem completed those steps you can determine if a equation went to purpose or not. In order for a reaction to go to completion it must fox one of the hobby three things. First, a gas is produced. This gas is usually H2, O2, or CO2. Secondly, a covalent compound (such as water) is yeared. Finally, a precipitate ( good) is formed. When none of those things ascertain it is considered to be no reaction. When one of those things does happen the reaction is considered to be completed. It is considered to be completed because all of the reagents in the sample have completely reacted out. invention The purpose of this lab was to be able to predict the phase of matter after a double replacement reaction, what the products were, and if the reaction was completed or not.Materials and Methods .1 M NaCl.1 M AgNO3.1 M Na3PO4.1 M NaOH.1 CuSO4Five droppersSpot dwelling housePen/PencilPaperGogglesApronSafety Precautions exhaust goggles and apron at all time while indoors the lab. You may use rubber gloves o protect your hands from the chemicals that give be used in the lab. If any chemical gets on your fur tell the teacher right a way and thoroughly lave it with water. If any chemicals happe n to get into your eye use the eye lap bottle or the emergency eye wash station. Make sure you wear closed shoes in the lab.No horse performing or inappropriate behavior in the lab. When the lab is complete instigate of the chemicals correctly and place them correctly on the drying rack.Procedure First, using a spot plate, place atomic number 23 drops of NaCl solution into swell I and IV, five drops of NaOH into wells II and V, and five drops of Na3PO4 into wells III and VI. Next, using the diagrams listed on the lab sheet, add five drops of CuSO4 to wells I, II, and III and five drops of AgNO3 to wells IV, V, and VI. Finally, note any color changes or precipitates formed and record your observations.Observations and selective information I. Appearance before Clear fluidness state. afterwards Still quiet state, light blue color. II. Appearance before Clear eloquent state. after Changed to solid state, dark blue. III. Appearance before Clear/transparent liquid state. After S olid state, light blue. IV. Appearance before Clear liquid state. After White, cloudy, solid state. V. Appearance before Clear liquid state. After Cloudy, bits of pieces, brownish, solid state. VI. Appearance before Clear and bubbly. After Yellow, cloudy, precipitate present, solid state.Question 1.Soluble means a substance is able to be dissolved, esp. in water. 2.Insoluble means a substance is incapable of being dissolved. 3.When the symbol (aq) is located next to an ionic compound it means any solution in which water (H2O) is the solvent. 4.A precipitate is to form an insoluble compound either by reacting two salts or by changing the temperature to affect the solubility of the compound. withal it is the name given to the solid that is formed as a proceeds of a precipitation reaction. 5.You can identify a precipitate when it is pen in a reaction if there is a (s) next to one of the reactants or products. If that (s) symbolizing a solid is not present you pull up stakes have t o look at Table F. Table F shows ions that form soluble/insoluble compounds. If the product/reactant falls under insoluble or the soluble exception column it is a precipitate. You can identify a precipitate in a reaction if the reactant or product is in solid form. 6. Balanced equation and statea.No Reactionb.NaOH + CuSO4 > Na2SO4 + Cu(OH)2 (s)c.2Na3PO4 + 3CuSO4 > 3Na2SO4 + Cu3(PO4)2 (s)d.NaCl + AgNO3 > NaNO3 + AgCl (s)e.NaOH + AgNO3 > NaNO3 + AgOH (s)f.Na3PO4 + AgNO3 > NaNO3 + Ag3PO4 (s)Conclusion The important idea of this experiment is that if you have the reactants of a double replacement reaction that you should be able to find out several things. First, you can phase out the products from switching the positive ion with the other positive ion. Once you have found the products you can determine the phase of matter they are in from Table F and H. Finally, you can also determine whether the reaction went to completion or not. The observations and data above leads me to believe that our experiment is valid. We were very paying attention and observant of the directions that needed to be taken. Once source of error could have been that certain substances were placed in the wrong wells, causing your data to float from the correct information. One way this experiment could be applied to a real life situation is he residue in the hobo of a trumpery in your bathroom.There is stuff dissolved in water, and any trace of water left in a glass will eventually evaporate and leave the residue. Another example can be found if you have ever been to a salt marshland along the ocean, you will see lots of salt deposits, which are respectable precipitated salt from the ocean water. One improvement that can be through with(p) to the lab so that students obtain more valid information is having larger wells. This way students can see which solutions they are mixing and observe the reaction better. From learning it in class on the smart board to really seeing the reaction using chemicals, this lab has really helped me further construe how double replacement reactions work, and what can be learned when all you have are the products.