35.Atropine sulfate之分子量為695,NaCl當量0.12(1 g A物質於稀溶液中產生之滲透壓相當於0.5 g NaCl產生之滲透壓,稱為A之NaCl當量=0.5),有一配方為「Atropine sulfate 1%,NaCl q.s. to isotonicity,sterile purified water, ad. to 30.0 mL」,依此配方配製100 mL需NaCl多少 mg?
(A) 130
(B) 234
(C) 780
(D) 950
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統計: A(577), B(1279), C(2970), D(196), E(0) #882822
統計: A(577), B(1279), C(2970), D(196), E(0) #882822
詳解 (共 5 筆)
#1240240
Atropine sulfate 1% = 1g Atropine sulfate/100 mL = 1*0.12 g NaCl/100 mL = 0.12g NaCl/100 mL
等張溶液: 0.9% NaCl = 0.9g NaCl / 100 mL
0.9 - 0.12 = 0.78 g = 780 mg NaCl
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#1613114
0.5是例子,告訴你1克物質當量是多少而已,如果是0.5就代表1克物質可抵0.5克NaCl題目是0.12代表一克atropine 滲透壓跟0.12克NaClㄧ樣
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#1607070
0.9-0.12=0.78
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#5975505
題目出得真好,下次別出了。
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