Q25 / 225 · JEE Main 2004 · Chemistry
An ideal gas expands in volume from $1 \times 10^{-3} \mathrm{~m}^3$ to $1 \times 10^{-2} \mathrm{~m}^3$ at $300 \mathrm{~K}$ against a constant pressure of $1 \times 10^5 \mathrm{Nm}^{-2}$. The work done is
- Correct answerA$-900 \mathrm{~J}$
- B$900 \mathrm{~kJ}$
- C$2780 \mathrm{~kJ}$
- D$-900 \mathrm{~kJ}$
Solution
Work done $=-P(\Delta V)$
$$
=-1 \times 10^5\left[10^{-2}-10^{-3}\right]=-900 \mathrm{~J}
$$
Hence, the correct answer is option: 'A'.