26 - Kinetic Theory of Gases Questions Answers

the two bulbs of volume 5 litres and 10 litres containing an ideal gas at 9atm and 6atm respectively are connected. What is the final pressure in the two bulbs if the temperature remains constant?

Asked By: RADHE 3 year ago
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a gaseous mixer containing equimolar amount of CH4 and C2H4.the mass of 2.24lit of this mixer at stp
Asked By: PALASH MURA 4 year ago
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A jar contains a gas and a few drops of water at T K . The pressure in the jar is 830 mm of Hg. The temperature of the jar is reduced by 1%. The saturated vapour pressures of water at the two temperatures are 30 and 25 mm of Hg. Calculate the new pressure in the jar.

Asked By: VAIBHAV GUPTA 5 year ago
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The relative humidity in a closed room at 15 ºC is 60%. If the temperature rises to 20ºC what will be the relative humidity? Vapour Pressure at 15ºC and 20ºC are 12.67 and 17.36 mm of Hg respectively.

Asked By: VAIBHAV GUPTA 5 year ago
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Two flasks of equal volume connected by narrow tube(of negligible volume) are at 300K and contains 0.7 mole of H2(.35 mole in each flask) at 0.5 atm.One of the flask is then immersed in a bath kept at 400k while the other remains at 300K. Caculate the final pressure and the number of moles of H2 in each flask.

Asked By: ABHISHEK PAHI 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

by gas eq.  PV/nT = constant

so 0.5*2V/0.7*300 = PV/n1400 + PV/n2300        (1)

no. of moles are also constant

so 0.7 = n1 + n2

similarly by gas eq. 

PV = n1R400                      for first flask

PV = n2R300                      for second flask

now solve

Calculate molecular diameter of  He from its Van der Waal's constant  b=24ml/mole.

Asked By: ABHISHEK PAHI 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

b = 4Vwhere V is volume of 1 mole particles

so 24*10-6 cm3/mole = 4*[4πr3/3] cm3/mole 

now solve

 

 

The Total energy of one mole of an ideal monoatomic gas at 300K is____.

Asked By: ABHISHEK PAHI 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

= 3RT/2 

 

differential form of boyle's law

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

 dV/dP = -V/P

the de- Broglie wavelength of a tennis ball of mass 200g and moving with a speed of 5m/h is of the order

10-20  , 10-30 ,   10-40

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

λ = h/mv

put values and solve but first convert all values in MKS

6.3g of hydrated oxalic acid is treated with M/20 Mg(OH)2. The volume of Mg(OH)2 used for complete neutralisation is

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

gm eq of oxalic acid = 6.3/63 = 0.1

gm eq of Mg(OH) = (1/20)*2*V

now compare the two

 

 

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