Q.

If the pressure of an ideal gas contains in a closed vessel is increased by 0.5%, the increase in temperature is 20C. The initial temperature of the gas is

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a

1270C

b

270C

c

4000C

d

3000C

answer is B.

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Detailed Solution

As volume is constant P1T1=P2T2

here T2=T1+2

and P2=100.5100P1

P1T1=100.5P1100T1+2

solving T1=400K

t1=400-273=1270C

 

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