For each following experiments.
(i) state the expected observable change(s) and
(ii) write ionic equations for the reaction(s) involved
a) Adding magnesium to lemon juice
(i)
(ii)
b) Adding copper(II) oxide to dilute hydrochloric acid
(i)
(ii)
s4 chemistry
2013-12-15 11:34 pm
回答 (1)
2013-12-16 6:32 am
✔ 最佳答案
(a)(i) Magnesium dissolves. Gas bubbles evolved from magnesium. Test-tube becomes warm.(ii) Mg(s) + 2H+(aq) --> Mg2+(aq) + H2(g)
(b)(i) Test-tube becomes warm. Solution become blue. Copper(II) oxide dissolves.
(ii) CuO(s) + 2H+(aq) --> Cu2+(aq) + H2O (l)
收錄日期: 2021-04-16 16:19:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20131215000051KK00110