asked in 科學及數學化學 · 1 decade ago

solutions containing Ca2+(aq).

solutions containing Ca2+(aq) do not give a precipitate with ammonia solution?

點解?冇precipitate咁會有咩反應?

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  • 1 decade ago
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    咦.

    我所讀的化學顯示, 他們是有precipitate的.

    ions contained in ammonia solution:

    NH4+ and OH- and H+

    Only OH- has attraction to Ca2+.

    Ca2+ forms white precipitate with OH- ion; the compound is called lime water.

    OH- ion form precipitates with all mental ion UNLESS lithum and sodium.

    Ca(OH)2 redissolves in carbon dioxide and forms Ca(HCO3)2 only.

    Therefore, solution cantaining Ca2+ give white precipitate with ammonia solution.

    Source(s): CE chemistry
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