111-1海資實驗exp4 小考

111-1海資實驗exp4 小考

2nd Grade

5 Qs

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111-1海資實驗exp4 小考

111-1海資實驗exp4 小考

Assessment

Quiz

Chemistry

2nd Grade

Practice Problem

Medium

Created by

Hsuan-Hung Liao

Used 1+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

以下何種條件,用於分辨Hard nucleophile 與Soft nucleophile?

溫度高低

溶劑pH值

電子雲密度

反應瓶大小

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

下列何者為Hard nucleophile?

CN-

OH-

H+

BH3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

2-乙醯基吡啶與黃酮會進行何種反應?

1,2-addition

1,3-addition

1,4-addition

deprotonation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Grignard 試劑(RMgX, Hard base)會與黃酮進行何種反應?

Substitution

1,2-addition

1,3-addition

1,4-addition

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列何者不是本實驗的步驟四中,加入1M HCl 的用意?

將未反應的Pyridine衍生物質子化

移除反應產生之鹽類

中和未反應完的NaOH

作為質子源,以進行後續反應

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