The Ideal Gas Constant

The purpose is to determine the value of the ideal heavy weaponeous accede constant, RObservations:At first a few seconds after we flipped the metro tip down bubbles gradually formed fast and faster as the HCl react with Mg train of thought, soon more or less 1/3 of the thermionic tube was proficient of H2 , and after upright about star minute the reaction had stopped and the tube was a forgetful over half honorable. After that we allow it cool get through and through to room squash for 4 more minutes. Data send back For idol Gas Constant Lab examination 1Trial 2Mass of 2 criterion of Mg screw thread (g/m)1.941.94Length of Mg ribbon (cm)4.404.40Mass of Mg ribbon (g)0.042680.04268Volume of gas (mL)44.5044.05Room temperature (oC)23.523.5Barometric atmospheric pressure (mm Hg)765.2765.2Calculations: Trial 1:Mass of Mg ribbon:1.94/ two hundred =0.0097g/cm0.0097(4.4) =0.04268gVolume of H2 gas in liters:44.50mL of H2 gas = 0.0445LRoom temperature in K:0oC = 273.15K23 .5oC = 296.65KPressure in cash dispenser:760mm Mg = 1 atm765.2mm Mg = 1.00684 atmCalculations: Trial 2:Mass of Mg ribbon:1.94/200 =0.0097g/cm0.0097(4.4) =0.04268gVolume of H2 gas in liters:44.05mL of H2 gas = 0.04405LRoom temperature in K:0oC = 273.15K23.5oC = 296.65KPressure in atm:760mm Mg = 1 atm765.2mm Mg = 1.00684 atmQuestions:1) Find the Pressure of heat content:Room temperature:23.5oCPressure of the water vapor: 21.7 mm HgPressure of H2: 765.2mm Hg ? 21.7 mm Hg = 743.5 mm Hg2) Balanced compare:Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq)3) Moles of Mg used:Molar Mass of Mg is 24.3g/mol0.04268/24.3 = 0.0017564 mol4) Moles of H2 produced:Same as moles of Mg used is 0.001756 mol5) Calculate R(P)(V)=(N)(R)(T)(1.00684)( 0.0445) = (0.001756)(R)( 296.65)0.0448 = .521R0.0860 (L)(atm)/(mol)(K) = R flaw Analysis:Percent Error:.0860- .0821 =.0039.0039/.0821 = .0475.0475(100) = 4.75%This % error is wide-cut because we are within 5%The nearly important error happens whenever we try to co ver the hole in the rubber quid with our fi! nger. Some of the liquid leaked out through our finger. This had an effect on our result because when the liquid leaked out, air gets in, which ordain mix with H2, and change magnitude the chroma. It leave behind then affect the assist latter on when we multiply the passel of H2 and the pressure. This error is profound because there could be 0.5 to 1 mL Increase of Liquid. When we saloon the length of Mg ribbon with a ruler, it might be off by .01cm because the smallest unit on the ruler is a mm. This will sidetrack our result because we could have + or -.01cm.

when we do the experiment it will effect how muc h of H2 we get at a cadence final stageed, because we have excise HCl and the limit reactant is Mg. This will effect the moles of Mg we got, then this will effect the moles of H2 . This error is significant because .01cm is big enough to make a difference in the last-place answer. Finally after the reaction, we waited for 5 minutes for the tube to cover room temperature. Im not sure if 5 minutes is enough. If the Temperature is senior high school than room temperature then the gass takes up a larger volume increasing our answer. The error is sort of significant because we don?t know exactly what the temperature is in the tube. Conclusion:In curio I worked out the value of the ideal gas constant, (R) which is (0.0821)(L)(atm)/(mol)(K), completely my final answer is (0.0860)(L)(atm)/(mol)(K). I had 4.75% of error, which isnt that big. We could improve this experiment by getting a better technique in finish the rubber stopper when we take the tube out of the liquid, or a m ore precise rulerp.s there is no bibliography because! this was a class experiment If you want to get a full essay, order it on our website: BestEssayCheap.com

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