
107國中自然2下_5-2
Authored by Yu Liu
Other
7th - 9th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一般狀態下,酯化反應速率很慢,為了加速反應的進行,通常會加入何種物質作為催化劑?
食鹽
二氧化錳
酒精
濃硫酸
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是有機酸類所具備的特性?
含-COOH原子團
組成元素為C、H、O
在水中可以解離出OH-
水溶液呈酸性
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者為醇類所具備的特性?
含有-COOH原子團
組成元素僅為C、H
在水中可以解離出OH-
水溶液呈中性
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關酯化反應的敘述,下列哪一項是錯誤的?
以鹽酸代替硫酸的效果會更好
酯類在水中通常會上浮
酯類在水中的溶解度不高
需要有機酸與醇類共同反應方能完成
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是烴類的性質?
易溶於水
碳數少的烴在常溫時大多數是氣體
碳數多的烴在常溫時大都是液體,甚至是固體
在空氣中完全燃燒的產物為CO2和H2O
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關乙醇的敘述,下列何者錯誤?
無色液體
燃燒時會放出大量的熱
是實驗室常用的溶質
有殺菌作用,可作為消毒劑
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關醋酸的性質與用途的敘述,下列何者正確?
醋酸是強酸,可分解大理石
醋酸是無色、無味的液體
3~5%的醋酸水溶液,具腐蝕性,因此不適合當作調味料
醋酸是一種有機酸,能溶解於水
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