30. 物質A發生平行反應生成期望產物R及非期望產物S。反應式及速率式分別為A → R,rR = 2CA ;2A → S,rS = 。請問R之瞬時產率(instantaneous fractional yield)φ(R/A)為何?
(A)
(B)
(C) 2CA + 1
(D)

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統計: A(0), B(0), C(1), D(4), E(0) #3803868