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23 Nov 2019

Is the change in entropy of surroundings (delta S surr) favorableor unfavorable
for exothermic reactions? for endothermic reactions?

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Reid Wolff
Reid WolffLv2
10 Sep 2019

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Related questions

Complete the following sentences about endothermic and exothermic changes.

Exothermic changes: the system _____________ the surroundings. The heat _____________ by the surroundings ___________ the freedom of motion of the particles which ___________ the entropy of the surroundings. Therefore, __________ ,  ______________ and ____________  

 

Endothermic changes: the system _____________ the surroundings. This heat _____________ by the surroundings ___________ the freedom of motion of the particles which ___________ the entropy of the surroundings. Therefore,  __________  ,   ______________  and  ____________   

 

Choices are

> increases -
< loses heat to lost
gains heat from gained decreases

Without doing any calculations, determine the sign < or> foreach system and surrounding for each chemical reactions.

2NO2(g)--->2NO(g)+O2(g) change in Hrxn +113.1 kJ

A) Change S sys. > 0, change S surr. > 0

B) Change S sys. < 0, change S surr. > 0

c) Change S sys. > 0, change S surr. < 0

D) Change S sys. < 0, change S surr. < 0

Please explain in detail why for high rating, thanks

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