1.一藥物(100 mg/mL)以零階次動力學降解,其反應速率常數為0.25 mg/mL/hr,在24 hr後,完整藥
物濃度剩多少(mg/mL)?
(A)99.75
(B)94
(C)90
(D)86
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統計: A(206), B(8282), C(112), D(72), E(0) #1150840
統計: A(206), B(8282), C(112), D(72), E(0) #1150840
詳解 (共 3 筆)
#1264763
零級
Cp=Co -ktCp=100-0.25*24=94
59
1
#5240243
Zero order 零級反應
C = C0 - kt
t1/2 = 0.5D0 / k
First order 一級反應
C = C0e-kt t1/2 = 0.693 / k
此題解法:
C = C0 - kt
C = 100 - (0.25X24)
C = 94
11
0