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Form 3 Chemistry Video Questions and Answers on Gas Laws

Form 3 Chemistry Video Questions and Answers on Gas Laws. Learn through well answered past exams questions.

Lessons (12)

• 1.    A given volume of ozone #(O_3)#, diffused from a certain apparatus in 96 seconds. Calculate the time taken by an equal volume of carbon(IV) oxide to diffuse under the same conditions (O=16.0,C=12.0
  3m 48s

• 2.    A gas occupies a volume of #400 cm^3 #at 500K and 1 atmosphere pressure. What will be the temperature of the gas when the volume and pressure of the gas is #100 cm^3# and 0.5 atmospheres respectively
  2m 48s

• 3.    A sealed glass tube containing air at s.t.p was immersed in water at #100^0C#. Assuming that there was no increase in the volume of glass tube due to the expansion of the glass,calculate the pressure of the gas inside the tube. (standard pressure=760mmHg,std temperature=273K)
  2m 57s

• 4.    #60cm^3# of oxygen gas diffused through a porous partition in 50 seconds. How long would it take #60cm^3# of sulphur (IV) oxide gas to diffuse through the same partition under the same conditions (S=32.0,O=16.0)
  3m 45s

• 5.    a) State the Charles’ Law b)The volume of a sample of nitrogen gas at a temperature of 291K and #1.0×10^5# Pa was #3.5×10^-2m^3#.Calculate the temperature at which the volume of the gas would be #2.8×10^-2m^3# at #1.0×10^5# Pa
  0m 0s

• 6.    #100cm^3# of sample of ethane gas diffuses through a porous pot in 100 seconds. What is the molecular mass of the gas Q if #100cm^3# of the gas diffuses through the same porous pot in 121 seconds under the same conditions? (C=12.0,H=1.0)
  3m 56s

• 7.    #140cm^3# of nitrogen gas diffuses through a membrane in 70 seconds.How long will it take #200cm^3# of carbon (IV) oxide gas to diffuse through the same membrane under the same conditions of temperature and pressure.
  4m 2s

• 8.    Calculate the pressure which must be applied to a fixed mass of #100cm^3# of Oxygen for its volume to triple at #100000Nm^-2#
  2m 0s

• 9.    A fixed mass of a gas has a volume of #250cm^3# at a temperature of #27^0C# and 750mmHg pressure. Calculate the volume the gas would occupy at #42^0C# and 750mmHg pressure. (#0^0C#=273K)
  3m 43s

• 10.    a) State the Graham’s Law of diffusion b) The molar masses of gases W and X are 16.0 and 44.0 respectively. If the rate of diffusion of W through a porous material is #12cm^3s^-1# .calculate the rate of diffusion of X through the same material.
  5m 9s

• 11.    A certain mass of a gas occupies #0.15dm^3# at 293K and 98,648.5 Pa. Calculate its volume at 101325Pa and 273K.
  4m 39s

• 12.    a) State the Boyle’s Law b) A gas occupies #500cm^3# at #27^0C# and 100000 Pa.What will be its volume at #0^0C# and 101325Pa?
  5m 49s