Question

When a sample of gas expands from $4.0L$ to $12.0L$ against a constant pressure of $0.3$ atm, the work done is:

• A. $243.19J$
• B. $-243.18J$
• C. $234.19J$
• D. $-234.19J$

Answer 1

The correct option is B $-243.18J$

Work done $W=-P\Delta V$

$W=-0.3\times (12-4)$

$W=-2.4atmL$

$W=-2.4\times 101.325J$

$W=-243.18J$