B4C3_電解質與酸鹼鹽B卷

B4C3_電解質與酸鹼鹽B卷

Assessment

Assessment

Created by

chungtsen chen

Chemistry

8th Grade

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Hard

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25 questions

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1.

Multiple Choice

1 min

1 pt

把硝酸鉀(KNO3)溶於水,則硝酸鉀會變成下列何者?

K、N、O 三種原子

K 原子與 NO3 原子團

K與 NO3兩種離子

K與 NO兩種離子

2.

Multiple Choice

30 sec

1 pt

燒杯內有 0.1M 的氫氧化鈉溶液 100 毫升,滴入酚酞溶液 2 滴,攪拌均勻後,放入一塊乾冰,即見白煙,下列與這個操作有關的敘述,何者正確?

此操作結果可視為酸鹼反應

溶液的顏色由無色漸漸變為粉紅色

溶液的鹼性逐漸增大

乾冰昇華變為白色氣體

3.

Multiple Choice

30 sec

1 pt

下列相同濃度的酸溶液,何者的 pH 值最小?

HCl

CH3COOH

H2SO4

HNO3

4.

Multiple Choice

1 min

1 pt

阿雅將稀鹽酸滴到白色粉末上,發現白色粉末上有氣泡產生,請問該白色粉末最可能是下列何者?

碳酸氫鈉 

氯化鈉 

硫酸鈣 

氫氧化鈉

5.

Multiple Choice

1 min

1 pt

下列哪一組反應後,會產生在常溫、常壓下比空氣輕的氣體?

大理石和稀硫酸 

銅片和濃硝酸 

鋅和稀鹽酸 

雙氧水和二氧化錳

6.

Multiple Choice

1 min

1 pt

在 25℃時將 CaO 固體加入水中,形成飽和水溶液。有關此水溶液的敘述,下列何者正確?

此水溶液呈酸性 

此水溶液可用來檢驗氧氣 

此水溶液加入石蕊試紙呈藍色 

加稀鹽酸於此水溶液產生氣泡

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