2500 cm of hydrogen is taken at S.T.P. The pressure of
this gas is further increased by two and a half times
(temperature remaining constant). What volume will
hydrogen occupy now ?
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Given, V1 =2500 cm3
P1 =760mm [At S.T.P]
It is said 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
We have to find out 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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