有幾條關於鋅(zinc)的問題想問大家...
假如把鋅(zinc)放進稀盬酸(hydrochioric acid)內,會有氣體釋出,
1.該氣體會使石灰水(lime water)變得乳濁嗎?為什麼?
2.該氣體是什麼?
3.舉出一種檢驗該氣體的方法
趕住交功課架!幫幫我呀!
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有關鋅(zinc)的問題n條...
2007-04-29 3:36 am
回答 (4)
2007-04-29 3:43 am
✔ 最佳答案
1.不會.因釋出ge氣體唔係二氧化碳.2.氫氣
3.把正在燃燒ge木條放在該氣體上,若該氣體是氫氣,便會發出"卜"一聲.
參考: me
2007-04-30 6:21 am
Well done!
2007-04-30 12:51 am
首先..金屬與酸的反應..係會出氫的..
以Zi為例..其氣體必定是氫..""
所以該氣體不能令石灰水變為乳濁..
把燃燒中的木條..放入試管..會聽到爆鳴聲或{卜}一聲""
這是氫的試驗方法!!*
以Zi為例..其氣體必定是氫..""
所以該氣體不能令石灰水變為乳濁..
把燃燒中的木條..放入試管..會聽到爆鳴聲或{卜}一聲""
這是氫的試驗方法!!*
參考: 中五化學書..酸與金屬
2007-04-29 1:37 pm
1 The gas product will not turn lime water milky
since the product is hydrogen that is not carbon dioxide
HYDROGEN + LIME WATER ----> NO REACTION
CARBON DIOXIDE + LIME WATER ---> CALCIUM CARBONATE ( milky product )
2 hydrogen gas
3 a burning splint test
test the gas product with a burning splint
a ' pop ' sound is given off show that the gas is hydrogen
since the product is hydrogen that is not carbon dioxide
HYDROGEN + LIME WATER ----> NO REACTION
CARBON DIOXIDE + LIME WATER ---> CALCIUM CARBONATE ( milky product )
2 hydrogen gas
3 a burning splint test
test the gas product with a burning splint
a ' pop ' sound is given off show that the gas is hydrogen
收錄日期: 2021-04-23 19:53:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070428000051KK04198