Multiple choice

Nitrogen at an initial state of 10 bar, 1 m3 and 300 K is expanded isothermally to a final volume of 2 m3. The p-v-T relation is $\bigg(p+\frac{a}{v^2}\bigg)v-RT$, where a > 0, the final pressure

  1. will be slightly less than 5 bar

  2. will be slightly more than 5 bar

  3. will be exactly 5 bar

  4. cannot be ascertained in the absence of the value of a
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\text{Here a>0, so above equation shows that $p_2$ is greater than 5 and +ve.}$

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