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Activity Series of Metals Lab

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Introduction

| ________________ Activity Series Lab-2012 Introduction The types of changes that occur during these tests are chemical changes. Chemical changes will usually be tough to reverse, a new substance is created, heat is released, light is released, a solid is made (precipitate,) gas produced or the solution changes in colour. These chemical changes can be cause by decomposition, combustion, synthesis, single displacement or double displacement. The type of reaction that occurs during the tests is a single displacement reaction. This means that one element replaces another element in a compound. The general equation used for this reaction is A + BC -> B + AC. Like most other chemical changes single displacement reactions cannot be reversed. Depending on the activity series of metal some elements will be able to displace the other metal in the compound and some may not. Single Displacement reactions occur according to the Activity Series of Metal. Based upon experimental evidence reactive metals have been placed in order of reactivity known as the activity series of metal. The activity series is a chart with the most reactive metals on the top and the least reactive metals on the bottom. Lithium is on the top meaning it is the most reactive whereas gold is on the bottom being the least reactive. ...read more.

Middle

In test number 5, a single displacement reaction was not predicted to happen due to the Activity Series of Metal. The zinc would not displace the calcium in the solutions. This will occur because calcium has a higher placement and is more reactive on the activity series of metals than zinc. The prediction was proven true and no reaction occurred. In test number 6, a single displacement reaction was predicted to happen due to the Activity Series of Metal. The aluminum would displace the tin in the solutions. This will occur because aluminum has a higher placement and is more reactive on the activity series of metals than tin. However the prediction was proven false and no reaction occurred. In test number 7, a single displacement reaction was predicted to happen due to the Activity Series of Metal. The copper would displace the silver in the solutions. This will occur because copper has a higher placement and is more reactive on the activity series of metals than silver. The prediction was proven true and the copper began to develop a gray drown precipitate. In test number 8, a single displacement reaction was predicted to happen due to the Activity Series of Metal. The tin would displace the lead in the solutions. ...read more.

Conclusion

5 Zinc Calcium Nitrate non- reaction Zn (s) + Ca (NO3)2 (aq) --> Ca (s) + Zn(NO3)2 (aq) 6 Aluminum Tin (II) Chloride reaction 2Al(s) +3 SnCl2(aq) ->NR 7 Copper Silver Nitrate reaction Cu(s)+ AgNo3(aq)-> Ag(s) +CuNo3(aq) 8 Tin Lead (II) Nitrate reaction Sn(s) + Pb(NO3)2(aq)->NR 9 Lead Zinc Chloride non-reaction Pb(s) + ZnCl2(aq) -> Zn(s) + PbCl2(aq) 10 Iron Copper (II) Sulfate reaction Fe(s) + Cu2(SO4)(aq) -> 2Cu(s) +Fe(SO4)(aq) Conclusion The Activity Series of Metal is very accurate and reliable when used to predict if a certain reactive metal will replace other metals within an ionic compound through chemical reactions. The chart can be referred upon when making predictions about the products from a certain set of reactants in a single displacement reaction and maybe even a double displacement reaction. The Activity Series of Halogens may also be just as helpful for displacement of halogens. This lab confirmed the reliability of the Activity Series of Metal by placing metals into different aqueous solutions to see if a displacement occurred through single displacement reaction. Even though some tests were proven false against the prediction made with the Activity Series of Metals, the results were probably altered due to the experimental errors made. These errors made, may have effect the results. The most important finding is that the Activity Series of Metal is only 100% accurate in a controlled environment where other gases and interference is not possible to cause unwanted reactions. ...read more.

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