Question

2500 cm cube of hydrogen is taken at STP the pressure of this gas is further increased by 2 and half time what volume will hydrogen occupy now?​

Answer 1

Explanation:

Given,

(volume)V1 =2500 cm

(pressure)P1 =760mm [At S.T.P]

  It is given that Hydrogen is subjected to 2.5 times increase in pressure.

  Thus final pressure ,

P2 of the gas is

= 2.5 x P1

= 2.5 x 760       

 P2 = 1900 mm

now,

V2  [final volume] which the gas occupies

From Boyle's Law,

At constant temperature,

P1V1 = P2V2

Thus , V2  =    P1V1P2

            V2  =   2500×7601900

             V2 = 1000cm3

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