Question

13. Three balloons of equal volume are filled, each with a different gas: H2, CO2, and O2, each to a to pressure of 1.50 atm at 25 °C. Answer each question about the balloons, including supporting evidence. Evidence might include an equation with an explanation of how it supports your response, or perhaps a statement about KMT a. Estimate the molar mass of each gas (just whole numbers). No need to show calculations. b. How do the number of gas molecules in the three balloons compare? c. How do the kinetic energies of the molecules in the three balloons compare? d. How do the speeds of the molecules in the three balloons compare? e. The average molar mass of air is 29 g/mol. If you were to release the balloons, which ones would float and which would sink? e. The day after you filled the balloons, which balloon will have shrunk the most?

Answer 1

Ans:- | v is equal for all 3_gases, (H2, (02;021 IP=1.50 am T= 25°C = 298 K (9) Molau Maws of H2 = 2 g/mol Molau Maus of co, a 449mol Molas Mais po 3 32 g/mol (b) According to avogando's law, "equal volume If au Gases at the same temp and Ipresswe have the same Dumber of molecules". So, in the given ques, equal volume.10% 3 gases lat p=1.60 atm _f T= 298 K que present $o, no. of gas molecules and we same for alt So NH ₂ = No. = No to (c) Kinetic energy, according to Kinetic Moleway Theory (RMT) only depends upon Temperature Les Temperature is să me fox au gases, so Kinetic energy you au gases cue same feth, = Elco, = BEDO; Los ]K. E a Tempt

(d). According to KMT; Vaimo c speed on 'molewkes Codot mean squame speed) is equal to Uoms = ORTO L I coherte M = Molwr Maes of gas I: Temperature R P Gas constingu Nowo, joom.0, we can say that si Vigns a MH₂ <Mo < M co (e) Avgi Molay Maus of air = 29 g/mol Now, y gas molecules are lighter than ais, they will float similiantys šos molecules that are heavier I thon air will sink . (molar Maus (M) of H₂ is 2 glmol Maio ...so it will float Mons Mais mit sinta

Page No. Date H McQ Mais, so it will sink tNow Acc. to KMT, rate of diffusion is I given by - 8 = PAON 20 MT Now, at constant Temperature and preiswie tra HTM So, MH, <Mo, < Mco, H₂>ro, reo, 0 So Balloon with He gas will sbyunk most I as it diffuse maximum