Q. 235.0( 1 Vote )
We know ideal gas equation
Where V= volume of gas
n=number of moles of gas
P=pressure of gas
Pressure at temperature 20 P1=200Pa
Volume at temperature 20 =V1
Increase in volume =2%V1
Volume at temperature 40 V2=V1+2%V1
From ideal gas equation, we can write
Since, tube got expanded by the end of the day, only volume will change. Number of moles remains the same, before and after expansion as no new gas has been added. So, the product of nR will be same before and after expansion.
Pressure of the tube at 400C is 209.45kPa.
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