Part A The change in energy, AE, is positive if the reaction absorbs energy. ay

Question

Part A The change in energy, AE, is positive if the reaction absorbs energy. ay For the purposes of this question, and One way a reaction can transfer energy to or from the change in volume. The total change in energy is the sum of A Surmoundings get colder and the system decseases in volume in terms of change s get hotter and the system expands in volume of the volume and temperature changes are similar among the eactions Also assume that the m Rank from most energy released to most energy absorbed. To rank items as equivalent, overlap them. Hints the heat and work

Explanation / Answer

A.

surrounding gets colder = heat is being absorbed by the system and taken from surrounding

system decreases in volume = work is done on the system and its energy will increase

B.

surrounding gets hotter = system gets colder and energy is lost by system

system is expanding = work is done by system and hence energy is lost by system

C.

surrounding gets hotter = system gets colder,system energy decreases

system decreases in volume = energy absorbed by system and system energy increases

D.

surrounding gets hotter = system gets colder , system energy decreases

no expansion of volume = no change due to work

heat released ranking can be done as:

B>C>D>A

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