Question

5 L cylinder contains 10 mol of nitrogen at 27${}^o$C. If whole of the gas escapes into atmosphere having pressure $1atm$, then the work to be done by the gas is:

• A. $-10kJ$
• B. $-15kJ$
• C. $-24.413kJ$
• D. $-50.4kJ$

Answer 1

Answer: (C)

$-24.413kJ$

Work done by gas $=-P\Delta V$

$=-nR\Delta T$

$=-10\times 8.314\times 300J$

$=-24.413kJ$