both chinese and english is acceptable...
更新1:
will it explode?
Calcium react with dilute acid
2009-06-10 2:22 am
what is the observation when calcium react with dilute acid?
both chinese and english is acceptable...
both chinese and english is acceptable...
回答 (2)
2009-06-10 3:40 am
✔ 最佳答案
Calcium gradually dissolves to form a colourless solution, and colouless bubbles are formed vigorously.
(If dilute sulphuric acid is used, the reaction would stop soon after the reaction starts.)
=
2009-06-22 16:58:29 補充：
The reaction is vigorous, but no explosion occurs.
2009-06-10 8:52 pm
CALCIUM REACT WITH DILUTE ACID會GIVE OUT HYDROGEN
同HCL : Ca + HCl --> CaCl + H2
同HSO4 : Ca + HSO4 --> CaSO4 + H2
同HCO3 : Ca + HNO3 --> CaNO3 + H2
係唔會EXPLODE,因為即使GROUP II 最REACTIVE ELEMENT都唔夠GROUP I 最唔REACTIVE反應大,所以唔會爆
同HCL : Ca + HCl --> CaCl + H2
同HSO4 : Ca + HSO4 --> CaSO4 + H2
同HCO3 : Ca + HNO3 --> CaNO3 + H2
係唔會EXPLODE,因為即使GROUP II 最REACTIVE ELEMENT都唔夠GROUP I 最唔REACTIVE反應大,所以唔會爆
收錄日期: 2021-04-29 18:23:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090609000051KK01239