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Lecture 4 : Behaviour of real gas: Deviation from ideal gas ; Liquifaction of gas ; Liquid state- vapor pressure ; Viscosity and surface tension

  • Chapter 5 - States of Matter Assignments 1

    Name two phenomena that can be explained on the basis of surface tension.

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  • Chapter 5 - States of Matter Assignments 2

    What is the effect of temperature on
    (i) density
    (ii) vapors pressure of a liquid?

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  • Chapter 5 - States of Matter Assignments 3

    Why is glycerol highly viscous?

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  • Chapter 5 - States of Matter Assignments 4

    Why does viscosity of liquids decrease as the temperature is raised?

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  • Chapter 5 - States of Matter Assignments 5

    Explain how the function pv/RT can be used to show gases behave non-ideally
    at high pressure.

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  • Chapter 5 - States of Matter Assignments 6

    Calculate the volume occupied by 5.0 g of acetylene gas at 500C and 740mm
    pressure.

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  • Chapter 5 - States of Matter Assignments 7

    Deduce the relation pv = nRT where R is a constant called universal.

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  • Chapter 5 - States of Matter Assignments 8

    State the law depicting the volume-temperature relationship

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  • Chapter 5 - States of Matter Assignments 9

    50 cm3 of hydrogen gas enclosed in a vessel maintained under a pressure of

    1400 Torr, is allowed to expand to 125 cm3 under constant temperature

    conditions. What would be its pressure?

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  • Chapter 5 - States of Matter Assignments 10

    Define absolute zero temperature.

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  • Chapter 5 - States of Matter Assignments 11

    How is the pressure of a given sample of a gas related to temperature at
    volume?

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  • Chapter 5 - States of Matter Assignments 12

    At what temperature will the volume of a gas at 00 c double itself, pressure
    remaining constant?

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  • Chapter 5 - States of Matter Assignments 13

    Ice has lower density than water. Give reason.

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  • Chapter 5 - States of Matter Assignments 14

    A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.

     

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  • Chapter 5 - States of Matter Assignments 15

    2.9 g of a gas at 95 °C occupied the same volume as 0.184 g of dihydrogen at 17 °C, at the same pressure. What is the molar mass of the gas?

     

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  • Chapter 5 - States of Matter Assignments 16

    Calculate the volume occupied by 8.8 g of CO2 at 31.1°C and 1 bar pressure.

    R = 0.083 bar L K-1 mol-1.

     

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  • Chapter 5 - States of Matter Assignments 17

    Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a balloon of radius 10 m, mass 100 kg is filled with helium at 1.66 bar at 27°C. (Density of air = 1.2 kg m-3 and R = 0.083 bar dm3 K-1 mol-1).

     

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  • Chapter 5 - States of Matter Assignments 18

    Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 dm3 at 27°C. R = 0.083 bar dm3 K-1 mol-1.

     

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  • Chapter 5 - States of Matter Assignments 19

    Calculate the total number of electrons present in 1.4 g of dinitrogen gas.

     

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  • Chapter 5 - States of Matter Assignments 20


    Calculate the temperature of 4.0 mol of a gas occupying 5 dm    3 at 3.32 bar.

    (R = 0.083 bar dm3 K-1 mol-1).

     

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    • Description:-

    Lecture 4 :
    Today, we will discuss the last four topics of this chapter, i.e; Behaviour of real gas: Deviation from ideal gas ; Liquifaction of gas ; Liquid state- vapor pressure ; Viscosity and surface tension from  Chapter 5 - States of Matter
    OBJECTIVES:
    1:  Know about gases Ideal gas equation ; Dalton’s law of partial pressure ; Kinetic molecular theory of gases
    Important Tip:
     This lecture about Chapter 5 - States of Matter is base for the further chapters. These topics help in many ways as to understand the and how we can use them. It help you in further studies also.
    Please go through the topic, their notes. Properly do the assignments, watch videos of the concerned topics. If you any doubt about any topic/point please submit it in the discussion section... it will be answered as soon as possible.
    After all of this... when you fell confident about the particular topic/chapter then take the quiz.

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