1.某一藥物(150 mg/mL)以零階次動力學降解,反應速率常數為2 mg/mL/h,請問該藥物到
達原濃度的80%需要多長的時間?
(A)7.5 h
(B)15.0 h
(C)20.0 h
(D)37.5 h
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統計: A(93), B(5335), C(80), D(81), E(0) #624566
統計: A(93), B(5335), C(80), D(81), E(0) #624566
詳解 (共 6 筆)
#3927574
150 x( 1-80 % ) / 2 = 15 h
8
0
#5205566
Zero order 零級反應
C = C0 - kt
t1/2 = 0.5D0 / k
First order 一級反應
C = C0 e-kt t1/2 = 0.693 / k
2
0