Q.

An ideal gas obeys an additional law PV2 = constant. Initially the gas is at 400 K. What is the temperature if it expands to 2V

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a

100 K

b

200 K

c

300 K

d

400 K

answer is B.

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Detailed Solution

PV2 = constant PV = nRTnRTVV2= constant  p=nRTVTV = constantif V becomes 2V and T becomes T/2
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An ideal gas obeys an additional law PV2 = constant. Initially the gas is at 400 K. What is the temperature if it expands to 2V