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Wednesday, July 17, 2013

Types of hemical reactions - Practical Report-(Refer to word document for subscripts,tables and correct characters.)

Types Of Chemical Reactions Aim: To investigate, discuss and lay several different types of chemic reactions by dint of a series of tribulations and observations. Decomposition of a trade by heating Apparatus:         Spatula         Bunsen         test tubing (x2)          shit bed (II) change         Stopper and slant subway system         Limewater Procedure: 1.          bulge out a spatular of Copper (II) change (CuCO2) in a test tube. 2.          live on with stopper and delivery tube leading into another(prenominal) test tube, alter with limewater. 3.         Heat the test tube containing the Copper (II) ampere-secondate and conform to any changes that take situate to it or the limewater. Results/observations: As the open-eyed blue Copper (II) carbonate heated, It saturnine black and created a gas which bubbled done the limewater going a milky sporting precipitate. Discussion: When the Copper (II) carbonate heated, comely zip was present to originate a reaction in which it reacted with the touch oxygen in which the Copper (II) carbonate decomposed: 2CuCO2 + O2 2CO2 + 2CuO Copper (II) carbonate + atomic number 8 ampere-second dioxide + Copper oxide The Carbon dioxide then travelled by the delivery tube and by the limewater: CO2 + Ca(OH) 2 CaCO3 + H2O Carbon dioxide + Limewater (Calcium hydroxide) Calcium carbonate + Water This reaction leaves us with the calcium carbonate precipitate and proportion that Carbon dioxide was the gas that was released through the outgrowth reaction.
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From this reaction it is workable to determine that a reaction between a carbonate and oxygen (burning) results in carbon dioxide and a metal oxide. Metal(X) change + Oxygen (and Heat) Carbon Dioxide + Metal(X) Oxide Decomposition of a carbonate with an acid Apparatus:         Spatular         Calcium carbonate         2mol L-1 Hydrochloric acid          assay tube (x2)         Limewater Procedure: 1.         Place a spatular of calcium carbonate into a test tube and make for 2-3 cm of hydrochloric acid. 2.         Fit the commencement test tube... If you want to charm a full essay, split it on our website: Ordercustompaper.com

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