Calculate S for the following reaction. N2(g) + 2 O2(g) 2 NO2(g)

[ss2343]

Question 1

Which of the following statements must be true for the entropy of a pure solid to be zero?

I.	The temperature must be 0 K.

II.	The solid must be crystalline, not amorphous.

III.	The solid must be perfectly ordered.

IV.	The solid must be an element.

◦ I
◦ I and II
◦ I, II, and III
◦ I, II, III, and IV

Question 2

Calculate ΔS° for the following reaction.

N2(g) + 2 O2(g) → 2 NO2(g)



◦ 15.5 J/K
◦ -121.5 J/K
◦ -156.5 J/K
◦ 636.5 J/K

[vkodali]

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[ss2343]

Great answer, keep it coming

[matt95]

Thanks for the timely response, appreciate it