國中自然2下ch3-3酸鹼的強弱與pH值
Quiz
•
Chemistry
•
8th Grade
•
Hard
翰林出版國中自然 翰林出版國中自然
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
pH 值愈大,則下列何者正確?
氫離子濃度愈大
氫氧根離子濃度愈小
氫離子濃度愈小
氫離子濃度不變
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列四種常吃的水果,哪一種的pH值最小?
番茄
木瓜
葡萄柚
香蕉
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
甲溶液是一般食醋,乙溶液是阿摩尼亞水(氨水),丙是純水,三者的pH值依大小順序排列,下列何者正確?
乙>甲>丙
乙>丙>甲
甲>乙>丙
甲>丙>乙
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
在25℃時,下列何者溶液之[H+]=[OH-]?
0.2M的食鹽水
1M的醋酸
0.5M的氫氧化鈉溶液
0.1M的氨水
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
比較0.1M和0.01M的鹽酸水溶液的pH值,下列何者正確?
前者較大
後者較大
兩者一樣
不能比較
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
將固體氫氧化鈉溶於水中,下列敘述何者錯誤?
溶液可導電
溶液溫度升高
溶液中僅含Na+和OH-
pH值升高
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
將濃度為2M的食鹽水400毫升,分裝於兩燒杯中,體積分別為100毫升及300毫升,則此兩燒杯中食鹽水的莫耳濃度比為何?
1:1
1:2
1:3
1:4
8.
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?
增加
減少
不變
忽大忽小
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