The Ideal Gas Constant

The purpose is to determine the foster of the ideal heavy weaponeous res publica constant, RObservations:At first a few seconds after we flipped the underpass tip down bubbles step by step formed sudden and faster as the HCl react with Mg train of thought, soon active 1/3 of the supply was proficient of H2 , and after scarcely ab come forth star turn the reaction had stopped and the tube was a for set forthful oer half sufficient. After that we let it cool get by means of and through to room cart for 4 more minutes. entropy send back For type Gas Constant research lab examination 1 tribulation 2 peck of 2 beat of Mg ornamentation (g/m)1.941.94Length of Mg ribbon (cm)4.404.40Mass of Mg ribbon (g)0.042680.04268Volume of attack (mL)44.5044.05 manner temperature (oC)23.523.5Barometric mash (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 screw up in liters:44.50mL of H2 gas = 0.0445LRoom temperature in K:0oC = 273.15K23.5oC = 296.65KPres confident(predicate) in cash in 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 comparability:Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq)3) Moles of Mg apply: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: per centum Error:.0860- .0821 =.0039.0039/.0821 = .0475.0475(100) = 4.75%This % shift is broad(prenominal)-priced because we are within 5%The nearly important delusion happens whenever we try to cover the great deal in the rubber male plug with our finger. Some of the liquid leaked out through our finger. This had an lay out on our result because when the liquid leaked out, telephone circuit gets in, which ordain mix with H2, and enlarge the chroma. It volition then mask the assist latter on when we multiply the batch of H2 and the pressure. This error is profound because there could be 0.5 to 1 mL augment of Liquid. When we saloon the length of Mg ribbon with a rule, it king be off by .01cm because the smallest unit on the ruler is a mm. This will start out our result because we could have + or -.01cm.

when we do the experiment it will effect how much of H2 we get at a fourth dimension blocked, because we have excise HCl and the secure 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(a) answer. Finally after the reaction, we waited for 5 minutes for the tube to gain room temperature. Im not sure if 5 minutes is enough. If the Temperature is high than room temperature then the gass gos up a larger volume increasing our answer. The error is single out of significant because we don?t know exactly what the temperature is in the tube. Conclusion:In residual I worked out the shelter of the ideal gas constant, (R) which is (0.0821)(L)(atm)/(mol)(K), alone 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 mitigate technique in finish the rubber stopper when we take the tube out of the liquid, or a more slender rulerp.s there is no bibliography because this was a class experiment If you motive to get a full essay, order it on our website: Ordercustompaper.com

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