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Question

Chemistry Question on Thermodynamics

An ideal gas expands in volume from 1?10−3m31?10^{-3} m^3 to 1?10−2m31?10^{-2} m^3 at 300 K300\, K against a constant pressure of 1?105 Nm−21?10^5\, Nm^{-2}. The work done is

A

-900 J

B

900 kJ

C

2780 kJ

D

-900 kJ

Answer

-900 J

Explanation

Solution

Work done =−P(?V)= -P(?V) =−1?105[10−2−10−3]=−900 J= - 1?10^5 [10^{-2} - 10^{-3}] = - 900\, J