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Yi-Hsiang Chao Robert Lewis Lab 5: The Molar Volume of Gases The purpose of this research laboratory was to find the grinder book of accounts of two gases O2 and H2 and how density and temperature touch on the mill wad. This taste could also be a expression to comparison and confirm the pass judgment values for hoagie al-Qurans of gases. For the offset government agency of the experiment, we observed the decomposition of hydrogen peroxide (H2O2) to H2O and O2 with the benefactor of a atom smasher (FeCl3). We used 20mL of 3% H2O2 solution with 4.5mL of 3 M FeCl3 as a catalyst to produce O2 gas. As the chemical reaction began, we observed scintillant as well as a dramatic waken increase in the reaction flaskfulful. The equilibrise equation is as follows: 2H2O2 (l) 2H2O (l) + O2 (g) Part two of the experiment involved reacting solid milligram (Mg(s)) with 3M HCl solution. As we started the procedure, we observed bubbling and fogging as the HCl dissolved the Mg. The flask also became heated imputable to the exothermic nature of the reaction. The balanced equation is as follows: Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g) For some(prenominal) parts, we measured the volume of gas produced by the reaction by measuring the volume of water that was displaced in the reaction. The reaction flask was attached to another flask alter with water which in turn fed into a beaker.

The volume of water displaced from the flask of water to the beaker is the same as the volume of the gas created in the reaction flask. For the measured volume of O2 produced, we null that the wedge volume at STP woul d be 25.7 moles/L. The recognised value for ! the molar volume of O2 at STP is 22.392 moles/L. The molar volume that we mensural were not the same as the accepted value of deification gases at STP, but this was probably delinquent to error do during the experiment. Percent error = (|25.7moles/L 22.392moles/L| / 22.392moles/L) * 100 `= 14.7% We calculated the molar volume of H2 the same government agency that we the O2. The molar volume that we calculated of H2 at STP was 62. moles/L....If you indispensability to get a secure essay, order it on our website: OrderCustomPaper.com

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