Question Detail

CHM 101 Thermochemistry Objective Question
Take CBT

Question

Expanding a gas from 46 L to 64 L against 15 atm does __________ J of work.
Options
A 27357
B -27357
Correct Answer
C 270
D -270
Correct Answer

Option B is the correct answer.

Detailed Explanation

w = -PΔV. Convert P to Pa: 15 atm * 101325 Pa/atm = 1,519,875 Pa. ΔV = 18 L = 0.018 m³. w = -(1,519,875 Pa * 0.018 m³) ≈ -27,357 J. Negative indicates system does work.

Hint

Use w = -PΔV with consistent units (Pa and m³).

Question Info

Course: CHM 101
Topic: Thermochemistry
Type: Objective
Difficulty: Not specified
Question 91 of 1872
Previous Course Details Next