An ideal gas is maintained at a constant pressure of 70,000 Pa during an isobaric process and its volume decreases by 0.2m^3. What work is done by the system on its environment? a. 14,000 Jb. 350,000 Jc. - 14,000 Jd. - 35,000 J

Question

Physics

Peyton Heath

2 January, 23:42

An ideal gas is maintained at a constant pressure of 70,000 Pa during an isobaric process and its volume decreases by 0.2m^3. What work is done by the system on its environment? a. 14,000 Jb. 350,000 Jc. - 14,000 Jd. - 35,000 J

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Answers (1)

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Brendan Vega · Answer 1

c. - 14,000

Explanation:

Workdone by gas is the product of the pressure and the volume where there is a change of volume.

If v1 is the initial volume of the gas and v2 is the final volume of gas, the work done

= p (v2 - v1)

where p is the pressure

and p = 70,000 Pa

Given that volume decrease by 0.2m^3, v2 - v1 = - 0.2

Workdone = 70000 (-0.2)

Workdone = - 14,000 J

Option c. - 14,000