1.

Equal volumes of two gases which do not react together are enclosed in separate vessels. Their pressure are 100mm and 400 mm respectively. If the two vessels are joined together, then what will be the pressure of the resulting mixture ( temperature remaining constant )

Answer»

125 mm
500 mm
1000 mm
250 mm

Solution :When two VESSELS are joined TOGETHER, volume will be doubled HENCE effective pressure will be halved.
`P=(P_(1)+P_(2))/(2)=(100+400)/(2)=250` mmHg


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