
ทดสอบพื้นฐานกรด-เบส1
Authored by Nontha Goson
Chemistry
9th - 12th Grade

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
logba + logbc = logbac
ดังนั้น log4 + log5 = ?
log20
20
log45
45
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
log56
log15
15
56
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
logan = nloga
ดังนั้น -log10-5 = ?
-5
5
-|5|
10log5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
log2 = 0.30
log3 = 0.48
log12 = ?
0.78
0.18
1.08
1.26
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
กำหนดให้ log 5 = 0.7
-log (5 x 10-5 ) = ?
-4.3
-5.7
4.3
5.7
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
กรดไฮโดรคลอริก (HCl) เข้มข้น 0.02 M มีค่า pH เท่าใด
กำหนดให้ log2 = 0.3
-2.3
-1.7
1.7
2.3
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
สารละลายเบส โซเดียมไฮดรอกไซด์ (NaOH) เข้มข้น 0.05 M จะมีค่า pOH เท่าใด
log5 = 0.7
1.3
2.7
12.7
11.3
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