Question

Empirical Gas Laws, Ideal Gas Law, Dalton's Law of Partial Pressures 3. A Mexible vessel is filled to a certain pressure with 12.00 L of gas. Under conditions of constant temperature and moles of gas, how does the volume of the gas change when the pressure of the gas is decreased by a factor of three? 4. A gas occupies a volume of 2.75 L at 350. mmHg and 200°C. What is the volume of the gas at 550. mmHg and 450.°C? 5. A mixture consisting of 0.120 mol N2, 0.018 mol O2, 0.112 mol CHA, and an unknown amount of CO2 occupies a volume of 9.04 L at 25°C and 1.17 atm pressure. How many moles of CO2 are there in this sample?

Answer 1

1 Civen that Jnih'al Voleeone CV, JP 121 . Const. Teuf (T,)= Tz, Constant mole no, ah P₂ = 1 Now, Piv, = P2V ₂ = P, X12L = + P X V2 =) N2 = 364] . Required volene ® Civen that Initially V = 2.75L V6 = 1 ' P, = 350 mm kg P2 = 550 mmHg Ti = 8 cool Tza 450°c & PIN = P, 2 y 350 mm Hg x 2.75 2 ssomning & - Ti Tz 200°c 450°C V = 3094 L final volume (Ve) = 30942

③ mole of mixt = mole of N2 + mol of a + mal of Chytmole of la 30.120 mial +0.018 mal +0.112 mel i molefcom = 0.251 malitinolegion - Now, wa 904L, Pizle17 ahm , Ti= 25° (= 298k As Idel ges Law RT molek n=pvalltahm x 9.042 T 20.433 ml 0.08206 Lahm x 298k Pulting in 6 00432 ml = 0.2sonal t mole of a Mole of Coz = 0.183 mall