Which process or processes produce an increase in entropy? i. cap n sub 2 times g plus 3 cap h sub 2 g rightarrow NH sub 3 times g ii. cap c sub 10 cap h sub 8 g rightarrow cap c sub 10 cap h sub 8 s iii. CH sub 3 OH l rightarrow CH sub 3 OH aq

Entropy generally increases when particles become more dispersed or gain freedom of movement. In process i, gaseous reactants form fewer moles of gas, so entropy decreases; in process ii, a gas becomes a solid, also decreasing entropy. Process iii changes liquid methanol into aqueous methanol, where it mixes with water, increasing dispersal. Therefore, only process iii increases entropy.

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