Question

The work done when a gas is compressed by an average pressure of $0.50$ atm so as to decrease its volume from $400c{m}^3$ to $200c{m}^3$ is:

• A. $10.13J$
• B. $20.13J$
• C. $30.13J$
• D. $40.13J$

Answer 1

The correct option is A $10.13J$

Work done $=-P\Delta V$
$W=-0.5\times (200-400)atmc{m}^3$
$W=100\times {10}^{-3}atmL$
$W=100\times {10}^{-3}\times 101.325J$
$W=10.13J$