Question

Indicate whether entropy will increase (I), decrease (D), or is unchanged (U).

a. ______ Your cup of coffee feels hot as you hold it.

b. ______ Condensation forms on your glass of water at dinner.

c. ______ You spray a can of WD40.

d. ______ Your car uses combustion to crank.

e. ______ Ice forms on the road.

f. ______ The ice on your windshield melts.

Answer 1

1. Entropy is degree of disorder, As one holds the coffee, heat is transferred from coffed to hand and the degree of disorder increases

2. During condensation, degree of disorder decreases ( since temperature decreases). Entropy decreases

3 During spraying, there is no heat transfer and no change in entropy

4. During combustion, a spontaneous process, entropy increases

5. During formation of icem entropy decreases

6. During melting of ice, entropy increases.