Can you please solve questions 4 and 6 and explain why they are the correct answ

Question

Can you please solve questions 4 and 6 and explain why they are the correct answers?
Thank you! D 4 There are two epuations of sae der Waals equation, at 273 K. A student is using these two major factor that accounts for most of the difference in the two values? a. Volume of the chlorine particles b. Chlorine is a halogen e. Diatomic nature of shlorine Forces of attraction between chlorine A 5. Which of these statements provides an accurate comparison of the general propernties of In a solid, particles are slightly closer together, have greater interparticle attractioms, and b. In a solid, particles are slightly further apart, have weaker interparticle attract e. In a solid, particles are slightly ckoser together, have weaker interparticle attractions, d. In a solid. particles are slightly further apart, have weaker interparticle attractions, have lower particle motion compared with a liquid have lower particle motion compared with a liquid. have greater particle motion compared with a liquid have greater particle motion compared with a liquid. ions, and from 40 C to 80."C. Which statement correctly describes what happens to the 6. A sample of gas is heated volume? The volume increases by a factor of 2. The volume decreases by a factor of 2. b. The volume increases by a factor of less d. The volume decreases by a factor of less a. than 2. than 2. 7. What will happen to the volume of a bubble of air submerged in a lake at 10.0°C and 2.00 atm if it rises the surface where the temperature is 20.0°C and the pressure is 1.00 atm? a. The volume will increase by a factor of d. The volume will decrease by a factor of 1.93. 2.00 The volume will increase by a factor of 2.07. The volume will increase by a factor of 4.00 e b) 1 c. The volume will remain the same CLo) 883

Explanation / Answer

4. The pressure exerted by the gas is the force acting per unit area of the gas molecules hitting the container on which it is kept. This is more so the case in the ideal gas world where the gas molecules are non-interacting i.e. they donot face the influence of each other

But the gases do deviate from ideality which is determined by the compressibility factor Z( a function of Temperature and Pressure) , the ideal gas having the value 1, For the non-ideal gases like methane,carbon dioxide the Z values are less than 1 and they tend to correlate well with the ease of liquefaction. The ease by which a gas can be liquified can be correlated from the intermolecular interactions. The more easily the gas can be liquified, the better the molecules in the gas interacts between one another and vice-versa. Thus the intermolecular interactions also lower the net force acting on unit area by the collision of the gas molecules on the gas vessel and thus in the non-ideal scenario of the pressure imparted will be less than the ideal one. Hence the force of attraction between the chlorine molecules is important in the calculation of preesure of the system.

6. The temperature is doubled from 40 to 80 degree celcius.

Considering ideal gas behaviour,

P1V1/T1= P2V2/T2

Let T2= 2T1 , and Pressure assuming constant in the course of this change T2,V2 are the final volume and the temperature respectively.

V1/T1=V2/2.T1

V1=V2/2 or V2= 2.V1 (The volume increases by the factor of 2).

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