無機化學-金屬2
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
永豪 劉
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
下列關於鹼金屬的敘述,何者正確?
在空氣中易與氧氣反應,故須存放在水中
常用電解法電解其鹽類水溶液而製得
鹼金屬熔點隨原子序增大而降低
鹼金屬中,鋰的氧化電位最小
2.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
市售一種金屬染黑劑,是由氯酸鉀(KClO3)與另一物質 X 所組成。若將鋅板置於該染劑中,可將鋅板表面先染成紅色,繼而變成黑色。試問下列哪一選項可能是該染劑所含的另一物質 X?
3.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
以赫耳法製備金屬鋁時,下列敘述何者正確?
可加入KAl(SO4)2降低熔點
陰極可以收集到氧氣
在電解槽中,液態鋁是靠較大比重由槽底分離出來
4.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
某溶液以鉑絲做焰色反應得知為黃色,此溶液若加入硝酸銀,可得黃色沉澱,此溶液所含溶質的化學式為何?
K2SO4
Pb(NO3)2
5.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
下列各項敘述,何者錯誤?
血紅素之中心金屬離子為 Fe3+
葉綠素為含鎂離子的錯合物
在血紅素中,配位中心與氧氣分子結合時,配位數為 6
一氧化碳與血紅素配位中心的結合力比氧分子強,因而使含氧的血紅蛋白轉變成一氧化碳血紅蛋白,造成中毒現象
6.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
下列有關過渡元素的性質之敘述,何者錯誤?
過渡元素都是金屬元素,大部份有多種氧化態
第一列過渡元素金屬與強酸反應均可產生氫氣
7.
MULTIPLE CHOICE QUESTION
45 sec • 7 pts
銅葉綠素-鈉鹽是一個食用色素,常用於牙膏或口香糖,其化學結構如附圖所示。下列敘述,哪一項正確?
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