Question

Review Conetante Periodic Table The ideal aas lew deecribes the relationiship amarg the volume of an lcasl gas (V, Its pressure (Pi, Its. abealute temperalure ), and number af moles Part A PV nRT Under standsrd condtons, the deal ges law does a gaod jab af appraximating these properties for any gss However, the ldesl gas lew does not accunt far all the properties af real pases such as intermolecular atrection and moleculer volume, which bename more pranaunond at low temperatures and high preesures. The ven der Vaais equation corects for thase factars with thc oonstants and , which are unique to each A300-L ask is filled with gssecus emmonis, NTI, The gas pressure measured st 18.0 Cs 1.55 atm. Assuming ideal ges bensvior, how many grams ofr ammonis are in the flask? Express your answer numerically in grams View Available Hintls) AEd ? substance: mase of NH (P+VnbnRT The ges constant R is equal to 0.0820 Tam/K m»l). Submit Ideal versus real behavior for gases In tha falawing part you can sen haw tha bahaviar of eal gasns devictos from the idanl behavior You will caleulate the pressura valuns for a gas using the ideal ges law and asa tha van dar Waals nquatian Take nota of how they diler Part B If 1.00 mal of argan is placed in a 0.500- ontainer at 22.0Cwhot is the rifference betwcen the ideal pressure (s predicted by the iceal gas law) and the real pressure (as predicted by the van der Waols equation? L345 (Latm)/mol and 0219 L/mol For argan, a Enter the pressure difference in atmospheres using two significant figures View Available Hints) Vη ΑΣφ tm Submit

Answer 1

Part-A:

V = 3.00 L; T = 18 ⁰C = 18 + 273.15 = 291.15 K; P = 1.55 atm; R = 0.082057 L.atm/mol.K

n = PV / RT = 1.55 atm x 3.00 L / 0.082057 L.atm/mol.K x 291.15 K = 0.19463481351 mol

mass of NH₃ = 0.19463481351 mol x 17.03052 g/mol = 3.31473208421 g

Answer: mass of NH₃ = 3.31 g

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Part-B:

n = 1 mol; T= 22 ⁰C = 22 + 273.15 = 295.15 K; V = 0.5 L; R = 0.082057 L.atm/mol.K

P = nRT / V = (1 mol x 0.08206 L.atm/mol.K x 295.15 K) / 0.5 L = 48.440018 atm

a = 1.345 L².atm/mol³ ; b = 0.03219 L/mol

(P + (1.345 L².atm/mol³ x (1mol)² / (0.5L)²) (0.5 L - 1 mol x 0.03219 L/mol) = 1 mol x 0.082057 L.atm/mol.K x 295.15 K

(P + 5.38 atm/mol)( 0.46781 L) = 24.220009 L.atm/mol

(P + 5.38 atm/mol) = 24.220009 L.atm/mol / ( 0.46781 L) = 51.7731750069 atm/mol

P = 51.7731750069 atm/mol - 5.38 atm/mol = 46.3931750069 atm

P_ideal - P_real = 48.440018 atm - 46.3931750069 atm = 2.0468429931 atm

Answer: P = 2.0 atm

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Review Constante Periodic Table The ideal gas law describes the relationship among the volume of an ideal gas its pressure Pits absolute temperature 7), and number of moles Part A 1.63 atm. Assuming ideal gas behavior, how many grams of ammonis are in the flask? A3.00-L 'ask is filled with gaseous ammonia. NTT. The gee pressure measured at 180 C Express your answer numerically in grams. View Available Hints) PV = nRT Under standard conditions, the ideal gas law does a paod jab af approximating these proaerties for any 988. However, the ideal gas law does not account for all the properties of real bases such as intermolecular attraction and molecular volume, which become more pranaungad at low temperatures and high pressures. The vender Waals equation contacts for these factors with the constants and b, which are unique lo each substance: + O ? 90 AED mase of NH - 3.311 (P+ )(V - nb) = nRT The gas constant Ris equal 10 0.08205 Talrn/[ K el) Submit Ideal versus real behavior for gases in the following part you can son haw tha bahavior of real gases dovinhas from the ideal behavior You wil calouine the pressure values for a gas using the ideal gas law and also tha van der Waals nuntian Take note of how they differ Part B If 1.00 mol of organ is placed in a 0.500-T container at 220 C. what is the difference between the ideal pressure (as predicted by the ideal gas law, and the real pressure (as predicted by the van der Waals cruation)? For organ, 1.1945 (1?.atm/mol and b (.08219 L/mol. Enter the pressure difference in atmospheres using two significant figures. View Available Hints) ? EVO ALDO 2.0 Padel Prod = atm Submit

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