
3-3 酸鹼濃度
Chemistry
8th Grade
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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各離子中,哪一種代表酸性?
H+
NO3-
SO42-
OH-
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
NaCl溶液的濃度為0.01M,其pH值等於多少?
2
7
1
0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在氫氧化鈉溶液中,加入純水稀釋後,則其pH值會如何?
減少
增加
不變
忽大忽小
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在鹽酸溶液中,加入純水稀釋後,則其pH值會如何?
增加
減少
不變
忽大忽小
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
純水的pH值為7,欲使pH值降低,應加入下列何種物質?
NaOH
NaHCO3
HNO3
NaCl
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列四種常吃的水果,哪一種的pH值最小?
番茄
葡萄柚
木瓜
香蕉
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何項常見液體的pH值一定大於純水?
天然雨水
番茄汁
可樂
小蘇打水
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