Predict the sign of entropy change for each of the following processes. Justify your answer?

a. Solid sugar is added to water to form a solution.

Positive entropy change. Energy contain before and after the process is the same, hence for the process able to occure there must be increase of entropy.

b. Iodine vapor condenses on a cold surface to form crystals.

Solid has lower entropy than vapor, thus this process has negative entropy change.

a) formation of one molecule lead chloride from 2 molecules, ability much less randomness, then there's a decrease in S; which ability delta S is destructive b) formation of two molecules from one molecule of CaCo3, ability extra randomness, then there is an develop in S; which ability delta S is helpful c) formation of four molecules from 2 molecule of reactants, ability extra randomness, then there is an develop in S; which ability delta S is helpful d)formation of one molecule from 4 molecules of reactants, ability much less randomness, then there's a decrease in S; which ability delta S is destructive e) formation of 8 molecules from seven molecule of reactants, ability extra randomness, then there is an develop in S; which ability delta S is helpful f) to that end, one molecule is reactant and one is product, however the product is a gas, and gas has extra randomness than stable or liquid, then there is an develop in S; which ability delta S is helpful.