依題係HKCEE 92年 Q31 既CHEM MC,,,
將mineral wool soaked with water +heat in a test tube.
test tube 入面有metal X ....是同時將METAL X+熱的.
in the above experiment , a gas evolved and burns at the jet. Metax is ?
a. zinc b aluminium
c magnesium d copper
ANS IS C..但係 我5明點解 ZINC 5得...?
5係兩者都會同steam 反應出hydrogen?
CHEM QUESTION .
2008-03-06 12:15 am
回答 (1)
2008-03-06 7:57 pm
✔ 最佳答案
the answer is C.magnesium can react with steam to form hydrogen gas.
but zinc cannot . in the reactivity series, zinc is below magnesium .
收錄日期: 2021-04-29 20:25:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080305000051KK01175