Question

( P v=n R T )
( 16 m^{3}=1 ) litre
( 4 d m^{3} 21 ) litre
( A_{A} ) constant ( T )
[
p vee geqslant text { constent }
]
As volumes become 2 litre to 4
linethen pressure willalso reduce do half
[
frac{V_{1}}{v_{2}}=frac{P_{2}}{P_{1}}
]
( frac{2}{4}=frac{12}{760} )
[
begin{array}{l}
760 times frac{2}{4}=P_{2}
P_{2}=380 mathrm{mm} mathrm{hg}
end{array}
]

# 2. 2 litres of a gas is enclosed in a vessel at a pressure of 760 mm Hg. If temperature remains constant, calculate pressure when volume changes to 4 dm3.

Solution