皂化反應式可表示為:油脂+氫氧化鈉水溶液→肥皂+甘油。已知肥皂的學名為脂肪酸鈉,甘油的結構如圖所示。下列有關此反應及物質的敘述,何者正確?

八下5-4有機物在生活中的應用-802

Quiz
•
Chemistry
•
8th Grade
•
Easy
楊 秉正
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
甘油的水溶液呈鹼性
肥皂的水溶液呈鹼性
反應後可用濾紙過濾,直接將產物分離
皂化反應是酸鹼中和反應,故反應快速
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
製作手工香皂時,可以利用回鍋油再加上一些簡單的材料,做出具有水果香味的香皂。有關手工香皂的製造,下列敘述何者正確?
加入乙醇主要用來產生水果香味
加入鹽酸才會進行皂化反應
加入乙酸乙酯使皂化反應加速進行
加入飽和食鹽水可以使香皂與其他產物分離
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如圖所示,圖中何者是肥皂分子的親水性部分?
僅甲
僅乙
僅丙
乙丙
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列關於清潔劑特性的敘述,何者正確?
親油端是由碳和氧組成的長鏈部分
洗衣粉、沐浴乳都屬於皂化反應的產物
可用豬油和酸性物質共煮製出
在硬水中,肥皂的洗滌效果比較差
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
小莉想利用學校所教的原理,自己製造肥皂,則她至少需要哪些原料?
沙拉油、硫酸
冰醋酸、乙醇
回鍋油、氫氧化鈉
蛋白質、硝酸
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
在試管中加入3 mL水及數滴沙拉油之後,再加入自製的肥皂於試管中,塞上橡皮塞,搖動試管,所得結果下列何者錯誤?
溶液呈酸性
試管中的液體變成混濁
有白色的泡泡
油水之間的界線不見了
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
製造肥皂的過程中,皂化(脂肪+氫氧化鈉→脂肪酸鈉+甘油)完成後,加入飽和食鹽水,使肥皂和甘油分離過程,叫做鹽析,它是利用下列哪一種性質來分離物質?
溶解度不同
熔點不同
沸點不同
比熱不同
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