. Assuming constant pressure, rank these reactions from most energy released by

Question

. Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system, based on the following descriptions: 1.Surroundings get colder and the system decreases in volume. 2.Surroundings get hotter and the system expands in volume. 3. Surroundings get hotter and the system decreases in volume. 4.Surroundings get hotter and the system does not change in volume. Also assume that the magnitude of the volume and temperature changes are similar among the reactions plz dont guess-- thx

Explanation / Answer

U=q+w

1. q of system is positive and w of system is positive
2. q of system is negative and w of system is negative
3. q of system is negative and w of system is positive
4. q of system is negative and w of system is zero

Most energy released by system
(2) > (4) > (3) > (1)

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