Data observation Essay Example for Free

Data observation Essay Complete a data table that includes a prediction of reaction type (single replacement, double replacement, synthesis, decomposition, or combustion), observations, and identification of reaction type for each reaction in the lab. (10 points) Reactants Prediction of Reaction Type Observations Reaction Type Iron (III) and copper (II) sulfate solution single replacement Solids stay concentrated at the bottom Single replacement Lead (II) nitrate and potassium iodide solutions Double replacement Yellow colored powder collected at the bottom Double replacement Magnesium metal and hydrochloric acid solution Single replacement The solution began to fizz. Proves to be flammable. single replacement Electrolysis of water decomposition The water bubbles In the tubes filled with H2 and O2 decomposition Burning magnesium combustion As the magnesium comes in contact with the CO2 it creates a bright burning light synthesis Conclusion: Write a balanced equation for each reaction observed in this lab. (10 points) 2Fe + 3CuSO4 = 3Cu + Fe2(SO4)3 Pb(NO3)2 + 2KI = PbI2 + 2K(NO3) Mg + 2HCl = MgCl2 + H2 2H2O = 2H2 + O2 2Mg + O2 = 2MgO If you were to measure the mass of magnesium and hydrochloric acid before combining them in the test tube, how would that mass compare to the mass of reactants left in the test tube after the reaction? Explain your answer and how it corresponds to the law of conservation of mass. (5 points) -The mass would be the same as it started. This is because the law of conservation of mass states that energy cannot be created nor destroyed only changed. One of the reactions you conducted can actually be categorized as TWO different types of reactions. Which reaction is this, and what are the two types of reactions? (5 points) It would be the Magnesium metal and hydrochloric acid solution because it bubbled but it still stayed in its form and didn’t change. It is single replacement or combustion.