CHM135H1 Lecture Notes - Lecture 9: Kinetic Theory Of Gases, Molar Mass, Btg Pactual

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limerhinoceros188

26 Sep 2018

School

UTSG

Department

Chemistry

Course

CHM135H1

Professor

Gilbert Walker, Eugenia Kumacheva, Kristine Quinlan

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CHM135H1 Lecture 8: Bonding+Gases-Notes(2018-09-21)

CHM135H1 Lecture Notes - Lecture 9: Kinetic Theory Of Gases, Molar Mass, Btg Pactual

CHM135H1 Lecture 10: CHM135, Lecture 10 Thurs Sept 27 2018

Document Summary

Chm135 lecture 9: liquids, solids and phase changes. September 24, 2018 (relevant reading chemistry 7ed mcmurray/fay/robinson chapter 11. 1-11. 4 and. Review the molecular view: kinetic molecular theory: no energy is lost during collisions, so total kinetic energy in container remains constant gas made of tiny particles (atoms or molecules) moving randomly. Volume of particle very small compared to size of container. (most of gas empty space) Particles aren"t attracted or repelled by each other. Particle collisions are elastic (no energy lost through friction) Within a gas sample, different particles of gas have different amounts of kinetic energy. Within a sample of gas, there"s a distribution of speed. Kinetic energy increases with temperature in kelvin. Ke = (cid:2871) (cid:1873)= (cid:2871)(cid:3040)(cid:3015)= (cid:2871)(cid:3014) ; m = molar mass. C, because increased temperature results in an increase in speed (diagram taken from lecture 7 powerpoint, slide 11: a 1. 98l vessel contains 215 g (4. 89 mol) of co2 at 299k.

Related Questions

1.) A gas is found to have a density of 3.165 g/L at STP. What is its molar mass? Which of the following gases is it most likely to be?

Molar Mass: _________

a. NH3
b. O2
c. Cl2

d. SF6

2.) Calculate the pressure exerted by 5.05 moles of NCl3 gas in a 20.00-L container at -205Â°C for a real gas. (for xenon: a= 42.63 atmÂ·L2/mol2 and b= 0.2450 L/mol)

3.) Which of the following is NOT true in the kinetic molecular theory of ideal gases?

The size of the molecules are negligible compared to the volume of the container

The kinetic energy of a sample is proportional to the temperature of the gas.

Collisions are elastic (no friction occurs between the molecules when they collide)

The pressure of a sample is affected by which gases are present.

Part, A ,and B

An instrument used to measure the pressure of a gas in a laboratory is called a barometer manometer sphygmomanometer spectrophotometer spectrometer The pressure of a gas in a container is1.85 atm and occupies a volume of 12.5 L If the original volume is reduced by hall at constant temperature, what would happen to the pressure? The pressure would ... double reduce by half remain the same On a hot summer day, you notice that a bag of chips left in your vehicle has inflated. As temperature increased, gas molecules .......... kinetic energy and the volume of gas inside the bag ....... Lost/increased gained/decreased lost/decreased gained/increased What mass of oxygen gas (O_2) is needed to fill a 585 L tank at STP? 0 835 kg 0.765 kg 0.417 kg Which of the following will cause the volume of an ideal gas to triple in value Raising the temperature from 25 degree C to 75 degree C at constant pressure. Lowering the absolute temperature by a factor of 3 at constant pressure. Lowering the pressure by a factor of 3 white the temperature stays constant. A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen? Br_2 F_2 C1_2 l_2 Define vapor pressure. partial pressure cf water in a Squid mixture partial pressure of wafer in a gases mixture condensation of water A mixture of 1.0 mol He and 1.0 mol No are at STP in a rigid container. Which of the following statements is TRUE Both gases have the same average kinetic energy. Both gases contribute equally to the density of the mixture under these conditions. Both gases have the same molecular speed. The following reaction is used to generate hydrogen gas in the laboratory Mg(s) + 2 HC1(aq) rightarrow MgC1_2(aq) + H_2(g) If 243 mL of gas is collected at 25 degree C and has a total pressure of 745 mm Hg. what mass of hydrogen is produced? Listed are vapor pressures at select temperatures: Listed are water vapor Pressures at select temperatures: 0.0144 g H_2 0.0717 g H_2 0.0190 g H_2 Which of the following compounds will behave LEAST like an ideal gas at low temperatures? He SO_2 H_2 N_2 F_2 A container Filed with neon and argon gas is 25.00% by volume neon. What is the partial pressure of argon it the total pressure inside the container is 5 500 atm? 412 5 atm 1.375 atm 4.125atm 28 5 L of an unknown gas has a mass of 55.92 g at STP. What is the identity of the unknown gas? CO_2 O_2 N_2 Explain what would happen to the following equilibrium upon the addition of more hydrogen gas? H_2O(g) + CO(g) doubleheadarrow H_2(g) + CO_2(g) producing more reactants producing more CO_2 equilibrium will not be attected For the following reaction, K_5 = 5.6 x 10^-6 (at 400 K): 2 NOC(g) doubleheadarrow 2 No_2(g) + C1_2(g) If [NOCI] = 0.0222 M, [CI_2] = 0.0222 M, [NO_2] = 0.989 M at once, which statement would be true? The rate of forward and reverse reaction are equal. Neither forward nor reverse reaction would occur. Rate of forward reaction would be taster. Rate of reverse reaction would be faster. K_c = 1.10 times 10^18 for CO(g) + 1/2 O_2(g) doubleheadarrow CO_2(g) Calculate the equilibrium concstant K_0 for the following CO_2(g) doubleheadarrow CO(g) + 1/2 O_2(g) 1.04 times 10^9 0.55 times 10^18 -1.10 times 10^18 9.09 times 10^19

CHM135H1 Lecture Notes - Lecture 9: Kinetic Theory Of Gases, Molar Mass, Btg Pactual

CHM135H1 Lecture 8: Bonding+Gases-Notes(2018-09-21)

CHM135H1 Lecture Notes - Lecture 9: Kinetic Theory Of Gases, Molar Mass, Btg Pactual

CHM135H1 Lecture 10: CHM135, Lecture 10 Thurs Sept 27 2018

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