An ideal gas expands in volume from 1×10-3 m3 to 1×10-2 m3 at 300 K against a constant pressure of 1×105 Nm-2. The work done is

Question

An ideal gas expands in volume from 1×10-3 m3 to 1×10-2 m3 at 300 K against a constant pressure of 1×105 Nm-2. The work done is (A) -900 J (B) 900 kJ (C) 2780 kJ (D) -900 kJ

Tardigrade Admin · Accepted Answer

Work done = -P(ΔV) = - 1×105 [10-2 - 10-3] = - 900 J

Q. An ideal gas expands in volume from $1 \times 1 0^{- 3} m^{3}$ to $1 \times 1 0^{- 2} m^{3}$ at $300 K$ against a constant pressure of $1 \times 1 0^{5} N m^{- 2}$ . The work done is

-900 J

900 kJ

2780 kJ

-900 kJ

Work done $= - P (Δ V)$
$= - 1 \times 1 0^{5} [1 0^{- 2} - 1 0^{- 3}] = - 900 J$

Q. An ideal gas expands in volume from 1×10−3m3 to 1×10−2m3 at 300K against a constant pressure of 1×105Nm−2. The work done is