Which of the following statements are correct about controlling chemical reactio

Question

Which of the following statements are correct about controlling chemical reactions ? a) At low temperatures, an exothermic reaction usually favors the formation of products. b) At high temperatures, an decrease in entropy favors the formation of products. c) Reactions occur more rapidly at high temperatures that at low temperatures. d) When a solid material is used as a reactant, the reacton will prooceed faster when the solid particles are made as small as possible. e) Catalysts are rarely used in large industrial chemical processes.

Explanation / Answer

A, C and D are all true. The truest statement of the bunch is "d"smaller particle (higher surface area) generally allows a reactionto proceed more quickly,
"c" is also generally true
"e" is false. catalysts are frequesntly used in large idustrialprocesses.
"b" can't really be answered, since entropy doesn't decrease in areaction.,
"a" I can't answer until you define "low temperature" and explainwhat you mean by the formation of products. Do you considerA+B->C to be forming products or only A -> B+C The truest statement of the bunch is "d"smaller particle (higher surface area) generally allows a reactionto proceed more quickly,
"c" is also generally true
"e" is false. catalysts are frequesntly used in large idustrialprocesses.
"b" can't really be answered, since entropy doesn't decrease in areaction.,
"a" I can't answer until you define "low temperature" and explainwhat you mean by the formation of products. Do you considerA+B->C to be forming products or only A -> B+C

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