In an experiment for finding the coefficient of expansion of air at constant pressure, the volume of air at 30^(@)C was 75 c.c. When the air was heated to 98^(@)C, keeping the pressure constant, it occupied 92 c.c. Calculate the volume coefficient of air.

In an experiment for finding the coefficient of expansion of air at co

1.	In an experiment for finding the coefficient of expansion of air at constant pressure, the volume of air at 30^(@)C was 75 c.c. When the air was heated to 98^(@)C, keeping the pressure constant, it occupied 92 c.c. Calculate the volume coefficient of air.
Answer» Solution :Initial volume `V_(1)=75` c.c , Initial TEMPERATURE `t_(1)=30^(@)C` , Final volume `V_(2)=92` c.c, Final temperature `t_(2)=98^(@)C` Volume coefficient of air, `alpha=(V_(2)-V_(1))/(V_(1)t_(2)-V_(2)t_(1))=(92-75)/(75 times 98-92 times 30)=17/(7350-2760)=17/4590=0.003704l^(@)C`