The hydrogen Change of the Decomposition of calcium CarbonateIntroductionResearch Question:What is the heat content modify of the decomposition of calcium carbonate?Background:Enthalpy in chemistry can be thought of as the animation contained within the stupefys, or the internal zippo, but it is non heat and you can only measure changes in it. When bond bonds break in the reactants energy is given off, when bonds form, energy is absorbed. If the energy absorbed is less than the energy released, then the reaction is energy-releasing and the products are more stable than the reactants and vice versa. But, the enthalpy, or change in energy, of some reactions are too difficult to restrain out in a standard laboratory collectable to toxins released or conditions that cannot be met in simple laboratory. Thus, that?s where Hess?s Law comes in as it states that if you go from the reactants to the products in one and only(a) reaction or many intermediate steps, the overall energy change is still the same.
In this experiment, Hess?s law testament be utilized to calculate the decomposition of Calcium carbonate. Calcium carbonate is a fairly stable compound, thus, it must convey that more energy goes into this reaction than out to produce the want results.
CaCO3(s)CaO(s) + CO2 (g)It is the enthalpy change of this reaction that this experiment was intentional to find. Of course, another route must be used to achieve this, so HCl is added to CaCO3 and to CaO, and then, through some calculations and the equation = M * C * can the enthalpy of the decomposition of calcium carbonate be found.
CaCO3 + 2HCl CaCl2 + CO2 + H2OCaO + 2HCL CaCl2 + H2OThese two reactions will be done in a polystyrene beaker so no heat is released. But for the chip reaction above, the opposite of the...
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