A) In a chemical reaction 2 moles of solid decomposes to form one mole of gas. Would you expect TriangleS to be positive, negative, or close to zero for this reaction?
1) In which of the processes described below should the entropy increase? Choose all of the correct possibilities.
a) ice cubes melting at -5 degrees Celsius and 1 atm pressure
b) water disappearing from a tea kettle by boiling away
c) gas sprayed onto a cold surface deposits (solidifies) and becomes part of the surface
d) dissolution of sugar in a hot cup of coffee
e) some dry ice left on a tabletop disappearing via sublimation
b) water disappearing from a tea kettle by boiling away
d) dissolution of sugar in a hot cup of coffee
e) some dry ice left on a tabletop disappearing via sublimation
Comments
Leave a comment