Test 2 Q 7 [ENDORSED]

[Katherine Grillo 1B]

Why is the change in Gibbs free energy negative when ice melts? Isn't it gaining heat or in other words, isn't delta H positive?

[annabel 2A]

Although deltaH is positive, deltaS is also positive (water is less orderly than ice), and deltaS*T is probably a greater value than deltaH which makes deltaG=deltaH-TdeltaS negative

[taywebb]

Because the outside environment is providing that heat directly, making this a naturally occurring reaction, no extra energy must be put in to make this reaction occur, so it is spontaneous.

[Rehan Chinoy 1K]

Just think about it conceptually -- the melting of ice is spontaneous in most temperatures, so deltaG should be negative.

[Selina Bellin 2B]

the situation is spontaneous bc there's nothing else that needs to be done to the ice in order to melt it

[Jonathan Christie 1I]

I was wondering how to come to this conclusion, thank you