要分辨出锌,铅,铁,铜和银.设备：盐酸,硝酸银,吸铁石,硝酸铅,试管,试管夹,木夹.(所有设备都要用到)原题是:.Somearereallyshihyandsomearedullwithwhatlookslikeawhitepowderontheirsurface.Anoldbookwrap

Question

要分辨出锌,铅,铁,铜和银.
设备：盐酸,硝酸银,吸铁石,硝酸铅,试管,试管夹,木夹.(所有设备都要用到)
原题是:.Some are really shihy and some are dull with what looks like a white powder on their surface.An old book wrapped in polythene id found in the bag,which informs them the objects are made of zine,lead,iron,copper or silver.but they don't knoe ehich metal is which.
Can you help them?

Answer 1

回答：1.先用吸铁石把铁验出,现象铁被吸铁石吸住.
2.用硝酸铅溶液把锌验出 ,现象是锌置换出铅 ..
3.用盐酸把锌和验出,现象是有气泡产生.
4 用硝酸银溶液把铜验出 ,现象是铜置换出银,剩下一种是银.