Q6 of 31 Page 90

1 mole of H2 gas is contained in a box of volume V = 1.00 m3 at T = 300K. The gas is heated to a temperature of T = 3000K and the gas gets converted to a gas of hydrogen atoms. The final pressure would be (considering all gases to be ideal)

Here, H2 gas is contained in a box is heated and gets converted to a gas of hydrogen atoms. Then the number of moles would become twice.


By Ideal Gas equation,


where P, V and T are the pressure, volume and absolute temperature; n is the number of moles of gas; R is the ideal gas constant. Considering the two cases,


, as V and R are constant, where P1, n1 ,T1 and P2,n2,T2are the pressure, number of moles and absolute temperature of first and second case respectively.


, i.e. P2=20P1

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