Question

Determine the percentage change in the volume of a sample of carbon tetrachloride when it is pressurized from 1.000 atm to 2.000 atm at 25 C.

Determine the percentage change in the volume of a sample of carbon tetrachloride when its temperature is changed from 25 C to 35 C.

Answer #1

from Boyles law we know, V_{2} =(P_{1}
*V_{1})/P_{2} where V_{2} is the new
volume,V_{1} is the initial volume ,P_{1} is the
initial pressure and P_{2} is the new pressure.

so ,V_{2}=1*V_{1}/2=V_{1}/2,putting the
value P_{1}=1 and P_{2}=2

so,change in volume (V1-V2)/V_{1}=2/7

so percentage change of volume,2/7*100=28.57%

so ,percentage change in volume,1/2*100=50%

from Charles
law,V_{2}=(V_{1}/T_{1})*T_{2}
,where T_{1} is the initial temp and T_{2}is the
new temp,V_{1} and V_{2} are initial and new
volume.

V_{2}=V_{1*}25/35=5V_{1}/7 putting the
value T_{1}=25 and T_{2}=35

so change of volume =V_{2}-V_{1})

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