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ทดสอบพื้นฐานกรด-เบส1

Authored by Nontha Goson

Chemistry

9th - 12th Grade

ทดสอบพื้นฐานกรด-เบส1
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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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