Oxidation Reduction. Range The Metals Copper, Lead, Silver And Zinc Together With Hydrogen To Find The Strongest Reducing Agent.

628 words - 3 pages

EXPERIMENT 1:Aim:To range the metals copper, lead, silver and zinc together with hydrogen. Start with the strongest reducing agent.Hypothesis:The nobler a metal is, the worse reducing agent.Apparatus/requirements:Sandpaper, strips of; zinc, lead, silver and copper, solutions containing aqueous; Zn2+, Pb2+, Cu2+ and Ag+ ions (0.2 M), hydrochloric acid (5.0 M), emery paper, test-tubes.Method:Burnish the three metal strips to get a shiny surface, after drop a drop of each of the metal ion solutions on the cleaned metal strips. Wash it off after a few minutes, and if there is patina present, record it. To test the reaction between the solids and hydrogen (H+) ions a small piece of each metal was dropped into a test-tube with 0.5 M hydrochloric acid.Results:The reaction formulas of the metals and the ions are as following:Zn(s)+2H+(aq)->Zn2+ + H2Zn(s)+Pb2+(aq)->Zn2+ +PbZn(s)+Cu2+(aq)->Zn2+ +CuZn(s)+2Ag+(aq)->Zn2+ +2AgPb(s)+Cu2+(aq)->Pb2+ +CuPb(s)+2Ag+(aq)->Pb2+ +AgCu(s)+2Ag+(aq)->Cu2+ +2AgConclusions:Zinc is the strongest reducing agent. Zinc loses electrons most easily and is therefore oxidised. After zinc comes lead, followed by copper, while silver has least reducing ability of the metals studied in this lab.The reducing ability of the metals was arrived at from the observations of patina formation on the metal plates. If the positive metal ions in the solutions are less powerful reducing agents, then the metal in the plate will be reduced and hence form a deposition of solid metal.e.g. Zn + Pb2+-> Zn2+ + PbEXPERIMENT 2:Aim:To range the halogens bromine, chlorine and iodine, with the strongest oxidising agent first.Hypothesis:A strong oxidising agent is a species that easily gains electrons, and is hence easily reduced. The ionisation energy of the halogens (Cl2, I2, Br2) decreases down the group, which means that going down the group, the elements gain electrons less easily. Since a strong oxidising agent easily gains electrons, and a substance with...

Find Another Essay On Oxidation - Reduction. Range the metals copper, lead, silver and zinc together with hydrogen to find the strongest reducing agent.

Hydrogen Bonding including BRIEF mentions to forces between non-metals and application of hydrogen bonding.

815 words - 3 pages of dipole-dipole attraction is in a water molecule which forms hydrogen bonds with other water molecules.It is known that the melting point and boiling point of water are significantly higher than those of molecular substances that have similar sized molecules. Inside a water molecule, covalent bonds hold the hydrogen and oxygen atoms together and this is known as intramolecular forces. However, it is the intermolecular forces of attraction that

The Reactivity of Metals. This report give an experiment showing how to find the most to least reactive metal.

1793 words - 7 pages By Sahil Dixit 11.06 Chemistry ExperimentAim:To compare the reactivity of metals in oxygen, water and a diluted acid, and rate the metals from most reactive to least reactive.Apparatus:6 X magnesium strips6 X calcium strips6 X copper strips6 X iron strips6 X zinc strips300 mL of waterBunsen BurnerTongs (metal and wooden)6 X Medium sized test tubesFunnel20 Ml of Dilute Hydrochloric acid (1 M)Measuring CylinderGogglesThermometerLab

Investigation of the effect of the mass of Zinc, on the temperature change of a Copper Sulphate solution

1142 words - 5 pages obtained all my evidence under lab safety precautions. I used a range of weights valid for my investigation, ranging from 0.5 to 2.5 grams, repeating each experiment twice for an average so I could get reliable evidence. I weighed Zinc using a weighing scale, measured the temperature with a thermometer, and measured Copper Sulphate with a measuring cylinder. All for precise, accurate, valid and reliable evidence.Analysing EvidenceA Graph to show

The Girl with The Silver Eyes

1432 words - 6 pages Hard-boiled detective fiction sets the scene for a cold and harsh reality. Dashiell Hammett’s, “The Girl with The Silver Eyes” is no exception to this rule. In this short story Hammett paints a picture of a brutally realistic urban center filled with characters that not many people would want to call friends. The realistic qualities of Hammett’s story are drawn from his own life’s experience working as a Pinkerton detective. The detective in

The Reactivity of Metals and Their Discovery

1791 words - 7 pages become more reactive, the later they were discovered. For example, the Group I metals were some of the last metals to be discovered, because they are the most reactive, and Gold, Copper, and Silver were the first metals to be discovered because they are the least reactive, and so they are the easiest to find. It takes a lot more energy to extract Sodium from its ore, than it does to extract Copper from the blue-green rock. Although there are some exceptions, mostly, the metals, the more reactive they are, the later they were discovered.

"The Strongest Woman".

505 words - 2 pages "The Strongest Woman"Before me stands the strongest woman, the person I admire and hope to become when I grow up; the strongest woman is my mother. Her smile brings meaning to my existence. Her mere presence lightens up the room, and her strength has made my brothers and myself stronger.She is short about four feet six inches, with short black hair about an inch from her shoulders. She has fairly normal ears, not too big and not too small. Her

To find out the optimum pH at which the enzyme catalase would best break down hydrogen peroxide.

2844 words - 11 pages GCSE SCIENCE COURSEWORK (BIOLOGY)PLANNING: Skill Area PWrite down the aim of your Investigation.The aim of investigation is that to find out the optimum pH at which the enzyme catalase would best break down hydrogen peroxide.Briefly describe your Preliminary Experiment and include your results. Explain how these results have helped you plan your main experiment (p8b).The purpose of the preliminary experiment was to find out the best source of

The Strongest Power

1580 words - 6 pages impeachments to trial with two-third votes. Senate must also approve all bills on raising money, as well as all laws must be passed before going to the President. All together, they oversee elections, to tax, borrow money, coin money, set rules of naturalization, regulate commerce, declare war, and make laws that are proper and necessary. Although the Legislative has many powers over the United States they do not have the power to suspend Habeas

Lord of the Flies and A Doll's House, Humans with power lead to evil.

618 words - 2 pages proclamation is proven to be true. "A Dolls House," by Henrik Ibsen demonstrates Abraham Lincoln's quote through two characters, Torvald and Krogstad. When Nora borrows money from Krogstad she is giving him the power. He uses it against her by blackmailing her into trying to get his job back. He is characterized as a ruthless, insensitive person. On the other hand there is Torvald who is a caring and loving husband and father. When he find

Silver’s Remaking Eden and the Silver Screen

1114 words - 4 pages scientists. Power resides in science, according to Silver, and that power is “enormous.” In the closing chapter to Remaking Eden, entitled “Tomorrow’s Children,” he recounts how “a single eccentric scientist named Kary Mullis” obliterated all “preconceived notions of scientific limitations” with his invention of the Polymerase Chain Reaction or “PCR” (240). As Silver describes it: More than any other technique invented during the twentieth

Investigating the rate of electrolysis. An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions.

2805 words - 11 pages the cathode, as explained earlier, for every two electrons, at the cathode one copper ion is discharged, whilst at the anode, one copper ion is formed This can be explained with the ionic theory, which basically states that the electrons flow away from the cathode, to the anode where the Cu2+ ions take 2 electrons from the negative electrode and become Cu atoms, this means that the mass loss at cathode = mass gain at the anode. This does support

Similar Essays

Corrosion: The Chemical Process Of Oxidation Reduction

1254 words - 5 pages with hydrogen: copper oxide + hydrogen → copper + water CuO + H2→ Cu + H2O Oxidation and reduction occur simultaneously, and therefore chemists often use the term oxidation-reduction when referring to this type of reaction. ("Oxidation." HowStuffWorks. ) The chemical process of oxidation-reduction (or redox) occurs at the surface of a metal when the metal is exposed to oxygen, water, or acids. In most redox reactions, oxygen and water are the

The Aim Of Our Lab Was To Determine The Specific Heat Of Copper And To Compare With The Actual Result And Then Find The Experimental Error.

746 words - 3 pages Specific Heat Labhttp://honolulu.hawaii.edu/distance/sci122/Programs/p21/image.gifAim:Specific heat is the amount of heat per mass required to raise the temperature of 1ºC. Different materials have different specific heats. The aim of our lab was to determine the specific heat of copper and to compare with the actual result by finding the experimental error.Materials and equipment:Electrical balanceWaterCalorimeterCylinder of

Lead And Copper Rule At The Federal And State Levels

841 words - 3 pages (with attention on the lead aspect) mandated to protect drinking water on the federal and state level. Federal Regulation The Lead and Copper Rule (LCR) was created June 7, 1991 and is found in 40 CFR 141 (USEPA, 2011). This section discuses the monitoring measures to test for the presence of lead, public notification requirements, and the action level (AL) established by the LCR. The section concludes with requirements that must be met if the

Explanations Of The Major Elements: Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Magnesium, Potassium, Sulfur, Sodium, Chlorine, Iron And Zinc.

1424 words - 6 pages . Symptoms include weakness, loss of appetite, bone pain, joint stiffness, irritability, numbness, speech disorders, tremors, and mental confusion. High levels of phosphorus lead to calcium deficiency. Excess phosphorus intake can also prevent absorption of iron, magnesium and zinc, and decrease vitamin D levels, which may increase the risk of bone disorders and cancer.Magnesium (Mg)Magnesium is responsible for many bodily functions. It is needed for