Test 2 Question 7






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Amy Dinh 1A
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Test 2 Question 7

Postby Amy Dinh 1A » Fri Mar 15, 2019 10:13 pm

Can someone explain why cooling a hot cup of coffee after it was brewed spontaneous (delta G < 0) when melting ice is also spontaneous?

skyeblee2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Test 2 Question 7

Postby skyeblee2F » Fri Mar 15, 2019 10:23 pm

In both instances, they are approaching equilibrium with their surrounding temperature. It would require no input of energy for a cup of hot coffee to cool down (when it is hotter than its outside environment) or an ice cube to heat up (when it is cooler than its outside environment). Thus, both are spontaneous.

riddhiduggal
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

Re: Test 2 Question 7

Postby riddhiduggal » Fri Mar 15, 2019 10:39 pm

They are both spontaneous because they are both approaching equilibrium.


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