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Single Replacement Lab Report

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Single Replacement Lab: Conclusion Questions Vaidehi Phirke To summarize the observations from the lab, many of the outcomes were similar in appearance, but different in their products’ chemical compositions. Of the reactions in which solid magnesium was added into the various solutions, 4 (which included copper (II) sulfate, lead (II) nitrate, silver nitrate, and zinc sulfate as reactants) of the total 5 that occurred resulted in the seeming disintegration of the solid magnesium into black flakes (color change) and the other one (which included sulfuric acid as a reactant) resulted in furious bubbling and fizzing (gas production). Of the reactions in which solid copper was added into the various solutions, only one reaction was observed (in which silver nitrate was a reactant) and it resulted in the blackening (color change) and flaking off of …show more content…

Of the reactions in which solid lead was added into the various solutions, 2 (which included copper (II) sulfate and silver nitrate as reactants) of the total 3 that were observed resulted in the almost disintegration of the solid zinc into black flakes (color change) and the other one (which included sulfuric acid as a …show more content…

The main purpose for the use of copper instead of the other metals is that copper is lower on the activity series as compared to hydrogen. This is significant because a water molecule is composed of a hydrogen cation and hydroxide. Because copper is lower than hydrogen on the activity series, the copper and hydrogen cation do not undergo a single replacement reaction. This is why copper does not corrode in the presence of neutral water. However, magnesium and zinc do corrode being immersed in water for long periods of time, because both of them are higher than hydrogen on the Activity Series. For this reason, they cannot be used in

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An error that could have been present during the lab includes not letting the zinc react completely with the chloride ions by removing the penny too early from the solution. For instance, the percent error of this lab was 45.6%, which was determined by the subtraction of the theoretical percent of Cu 2.5% and the experimental percent of Cu 3.64% and dividing by the theoretical percent of Cu 2.5%. This experiment showed how reactants react with one another in a solution to drive a chemical reaction and the products that result from the

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Discussion 1. Zn0 (s)+ Cu2+S6+O42-(aq) →Cu0(s) + Zn2+S6+O42-(aq) Zn0(s) → Zn2+(aq) + 2e- Cu2+(aq) + 2e- → Cu0(s) Zn0(s) + Cu2+(aq) → Zn2+(aq) + Cu0(s) Oxidant (oxidizing agent) is the element which reduces in experiment.

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For Station 4 , the magnesium and zinc turnings blackened when introduced to Cu(NO3)2 . Copper (II) nitrate, zinc nitrate and magnesium nitrate all changed colour when sodium carbonate was added. b)Magnesium is most reactive (#1). Zinc is second most reactive (#2). Copper is the least reactive (#3).

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After I obtained this and measured the mass to make sure I had the right amount, I then added it to my blue solution from the last step of the lab. I placed a watch glass on the beaker and continued to watch the chemical reaction take place and recorded what happened. There was lots of bubbling and come condensate that formed on the watch glass. The Zn began to transform into copper and started floating on top of the liquid after the blue color quality was changed into clear. I stirred periodically to make sure all the bubbling was finished.

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The lab started off by measuring critical materials for the lab: the mass of an an empty 100 mL beaker, mass of beaker and copper chloride together(52.30 g), and the mass of three iron nails(2.73 g). The goal of this experiment is to determine the number of moles of copper and iron that would be produced in the reaction of iron and copper(II) chloride, the ratio of moles of iron to moles of copper, and the percent yield of copper produced. 2.00 grams of copper(II) chloride was added in the beaker to mix with 15 mL of distilled water. Then, three dry nails are placed in the copper(II) chloride solution for approximately 25 minutes. The three nails have to be scraped clean by sandpaper to make the surface of the nail shiny; if the nails are not clean, then some unknown substances might accidentally mix into the reaction and cause variations of the result.

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Shifa Sayeed can you check if this is all in past tense and if it has personal pronouns? The purpose of this experiment was to observe and thoroughly analyze how different substances of dissimilar intermolecular forces acted in different scenarios of evaporation, evaporative cooling, and boiling. In the lab, the three substances tested and compared were Acetone, Acetic Acid, and Propanol.

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Throughout the experiment, copper was altered a total of 5 times, but after the final chemical reaction, solid, elemental copper returned. Each time the solution changed color, a precipitate formed, or when gas appeared, indicated that a chemical reaction was occurring. For the first reaction, copper was added to nitric acid, forming the aqueous copper (II) nitrate (where the copper went), along with liquid water, and

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The objectives of this experiment were to use knowledge of chemical formulas and chemical nomenclature to experimentally determine the empirical formula of copper chloride. Common laboratory techniques were used to conduct a reaction between copper chloride and solid aluminum in order to get rid of the water of hydration. The amount of water of hydration in the sample of copper chloride hydrate was calculated by measuring the mass before and after heating the sample. Afterwards, an oxidation-reduction reaction was conducted, resulting in elemental copper.

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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

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Discussion A chemical reaction did occur in every combination, however no signs were shown for combination d) between sodium chloride and potassium nitrate. Indications of a chemical reactions occurring between these two compounds were not present, as in the colour did not change, and gas, heat, light nor sound was produced. In addition, when sodium chloride and potassium nitrate combine they form sodium nitrate and potassium chloride. The products sodium nitrate and potassium chloride are both aqueous, therefore no precipitate was formed either.

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159 Words | 1 Pages

The experiment produced low results. The negative error was assumed to be caused by an error in the calibrating of the scale. During this lab the scale was not properly calibrated, therefore the data recorded and calculated using the mass values obtained by the scale was mistaken. This error could lead to the incorrect mass of the precipitate, the crucible and any other mass weight during the lab, which in turn derailed all the calculations. Another reason the results could be lower than the real value was so yield of precipitate occurs when soluble CIO3- was formed as the Cl- ions were lost through the filtration apparatus when the degeneration of the silver chloride occurs, with extra Ag+.

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871 Words | 4 Pages

For our mixtures, we placed the metal pieces inside of a small test tube, poured 1-2 mL of the metal ion solution into the tube, waited 30 minutes, and decided if there was a reaction or not. For the second experiment, we dissolved 0.5 g of solid copper(II)nitrate in 20 mL of deionized water and 0.5 g of sodium iodide in a separate 20 mL of deionized water, combined the two solutions, and recorded our observations. Then we combined 2 mL of 0.1 M sodium iodide, 2 mL hexane, and 2 mL of iron(III)chloride in a test tube and recorded our observations. Lastly, we mixed 2 mL of 0.1 M sodium iodide, 2 mL hexane, and 2 mL of 0.1 M tin(IV)chloride in a test tube and recorded our

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321 Words | 2 Pages

Referencing our data, it can be determined that out of the three metals, Pb, Cu and Zn, it is shown that Lead (Pb) is more active than Copper (Cu) due to single-replacement reaction that took place. Lead had replaced Copper in the solution. Zinc (Zn), however, had replaced Lead thus leaving Copper to be the least active leaving Zinc to be the most active out of the three. In order of activity from least active, to most active, the metals would be lined up as following: Ag, Cu, Pb, Zn, Mg. From this lineup, it was be determined that hydrogen is more active than the elements silver and copper yet less active than zinc and magnesium.

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Copper is an element and a mineral important to our everyday lives. Because copper is stable, it can be used in jewelry, coins, wiring, and statues. It’s one of the well-known metals due to its reddish brown metallic color. Because copper has high ductility, malleability, thermal and electrical conductivity, and resistance to corrosion, it is a major industrial metal. Copper is one of the oldest metals, dating back more than 10,000 years ago.

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894 Words | 4 Pages

Copper is a solid metal found in group 11 in the periodic table. Humans first began to use this metal over 10,000 years ago. They used it to make weapons and later also coins, water pipes and ships. The Romans and Egyptians are known to have used copper in wide ranges. Copper was used for so long because it is relatively easy to mine and extract from its ore.

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