
環境化學110
Authored by Karen Chuang
Chemistry
University

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
酚酞鹼度叙述,下列何者正確?
將pH降至pH=10.8所需之酸量
將pH降至pH=4.5所需之酸量
將pH降至HCO3-當量點所需之酸量
將pH降至H2CO3當量點所需之酸量
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
環保署以「河川污染程度指数(RPI)」来評估河川水質之狀況,在中度污染的程度下,下列何項參數有誤?
4.5≥D0≥2.0
5.0≤ BOD5 ≤15.0
20.0<SS≤49.9
1.00<NH3-N≤3.00
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
為避免水中某重金屬造成痛痛病,在「飲用水水質標準」規定中,其最大限值何者正確?
鎘:0.01mg/L
鎘:0.005mg/L
汞:0.002 mg/L
汞:0.001 mg/L
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在25°C,一大氣壓下,12公升的常態氣體被收集及乾燥,乾燥後體積降為11公升,則原空氣樣品中,水占了多少重量百分率?
10.5 %
8.33%
7.15%
5.19%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
反應速率的敘述中,下列何者為一階反應?
C=C0-Kt
t1/2=In2/K
(1/C-1/C0)=Kt
t1/2=0.5xC0/K
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
COD分析時加入HgSO4試劑是作為何種用途?
催化作用
指示劑
去除鹵化物之干擾
迴流時穩定
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
水中溶氧以Winkler法測定時,會加入下列何種試劑,克服還原物質的干擾?
KI
MnSO4
Na2S2O3
高錳酸鹽
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