test of calcium
回答 (4)
2007-02-11 12:00 am
✔ 最佳答案
flame test~In a flame test, moisten a clean platinum wire with concentrated hydrochloric acid. Dip the wire into a crushed sample 即係CaCO3 of the salt to be tested.Heat strongly in a non-luminous flame. By oberving the colour of the flame at the wire, 如果出黎ge 係brick red ~ 咁即係有calcium 喇~
2007-02-11 12:46 am
Carry out a flame test with the sample (put the sample on an non-luminous Bunsen flame). If it gives a brick-red flame, the sample contains calcium.
2007-02-10 16:47:48 補充：
Carry out a flame test with the sample (put the sample on an non-luminous Bunsen flame). If it gives a brick-red flame, the sample contains calcium.
2007-02-10 16:47:48 補充：
Carry out a flame test with the sample (put the sample on an non-luminous Bunsen flame). If it gives a brick-red flame, the sample contains calcium.
參考: me
2007-02-10 11:25 pm
Flame Test
Burn the sample, if a brick-red flame is observed. This can prove that CaCo3 contain Calcium
Burn the sample, if a brick-red flame is observed. This can prove that CaCo3 contain Calcium
2007-02-10 11:20 pm
By flame test, Calcium would give a brick red colour.
收錄日期: 2021-04-12 21:51:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070210000051KK02333